X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=genevent-new%2Fgenevent.c;h=a478e03b0c308e3a703f9ad05d689708409f270e;hb=2d097aba294e1ce388f16b54f5b488d0d138abc8;hp=7b141a5721fb114535fa91fa44951067d5e31887;hpb=92d82357025f12c79c9619cde95ab661c9e8bf70;p=lttv.git diff --git a/genevent-new/genevent.c b/genevent-new/genevent.c index 7b141a57..a478e03b 100644 --- a/genevent-new/genevent.c +++ b/genevent-new/genevent.c @@ -55,6 +55,9 @@ * to know the structure's alignment. */ +#define _GNU_SOURCE +#include +#include #include #include #include @@ -62,27 +65,2654 @@ #include #include #include -#include +#include + +#include "genevent.h" +#include "parser.h" + + +#define TRUE 1 +#define FALSE (!TRUE) + +/* Debugging printf */ +#ifdef DEBUG +#define dprintf(...) \ + do {\ + printf(__FILE__ ",%u,%s: ",\ + __LINE__, __func__);\ + printf(__VA_ARGS__);\ + } while(0) +#else +#define dprintf(...) +#endif + +/* Code printing */ + +void print_tabs(unsigned int tabs, FILE *fd) +{ + for(unsigned int i = 0; itype_name != NULL) { + strncpy(basename, td->type_name, PATH_MAX); + basename_len = strlen(basename); + } else { + /* For a unnamed type, there must be a field name */ + if((basename_len != 0) + && (basename[basename_len-1] != '_') + && (field_name[0] != '\0')) { + strncat(basename, "_", PATH_MAX - basename_len); + basename_len = strlen(basename); + } + strncat(basename, field_name, PATH_MAX - basename_len); + } + + switch(td->type) { + case INT_FIXED: + fprintf(fd, "%s", intOutputTypes[getSizeindex(td->size)]); + break; + case UINT_FIXED: + fprintf(fd, "%s", uintOutputTypes[getSizeindex(td->size)]); + break; + case CHAR: + fprintf(fd, "signed char"); + break; + case UCHAR: + fprintf(fd, "unsigned char"); + break; + case SHORT: + fprintf(fd, "short"); + break; + case USHORT: + fprintf(fd, "unsigned short"); + break; + case INT: + fprintf(fd, "int"); + break; + case UINT: + fprintf(fd, "unsigned int"); + break; + case FLOAT: + fprintf(fd, "%s", floatOutputTypes[getSizeindex(td->size)]); + break; + case POINTER: + fprintf(fd, "const void *"); + break; + case LONG: + fprintf(fd, "long"); + break; + case ULONG: + fprintf(fd, "unsigned long"); + break; + case SIZE_T: + fprintf(fd, "size_t"); + break; + case SSIZE_T: + fprintf(fd, "ssize_t"); + break; + case OFF_T: + fprintf(fd, "off_t"); + break; + case STRING: + fprintf(fd, "const char *"); + break; + case ENUM: + fprintf(fd, "enum lttng_%s", basename); + break; + case ARRAY: + fprintf(fd, "lttng_array_%s", basename); + break; + case SEQUENCE: + fprintf(fd, "lttng_sequence_%s", basename); + break; + case STRUCT: + fprintf(fd, "struct lttng_%s", basename); + break; + case UNION: + fprintf(fd, "union lttng_%s", basename); + break; + default: + printf("print_type : unknown type\n"); + return 1; + } + + return 0; +} + +/* Print logging function argument */ +int print_arg(type_descriptor_t * td, FILE *fd, unsigned int tabs, + char *nest_name, char *field_name) +{ + char basename[PATH_MAX]; + unsigned int basename_len = 0; + + strcpy(basename, nest_name); + basename_len = strlen(basename); + + /* For a named type, we use the type_name directly */ + if(td->type_name != NULL) { + strncpy(basename, td->type_name, PATH_MAX); + basename_len = strlen(basename); + } else { + /* For a unnamed type, there must be a field name */ + if((basename_len != 0) + && (basename[basename_len-1] != '_') + && (field_name[0] != '\0')) { + strncat(basename, "_", PATH_MAX - basename_len); + basename_len = strlen(basename); + } + strncat(basename, field_name, PATH_MAX - basename_len); + } + + print_tabs(tabs, fd); + + switch(td->type) { + case INT_FIXED: + fprintf(fd, "%s", intOutputTypes[getSizeindex(td->size)]); + fprintf(fd, "lttng_param_%s", field_name); + break; + case UINT_FIXED: + fprintf(fd, "%s", uintOutputTypes[getSizeindex(td->size)]); + fprintf(fd, "lttng_param_%s", field_name); + break; + case CHAR: + fprintf(fd, "signed char"); + fprintf(fd, " lttng_param_%s", field_name); + break; + case UCHAR: + fprintf(fd, "unsigned char"); + fprintf(fd, " lttng_param_%s", field_name); + break; + case SHORT: + fprintf(fd, "short"); + fprintf(fd, " lttng_param_%s", field_name); + break; + case USHORT: + fprintf(fd, "unsigned short"); + fprintf(fd, " lttng_param_%s", field_name); + break; + case INT: + fprintf(fd, "int"); + fprintf(fd, " lttng_param_%s", field_name); + break; + case UINT: + fprintf(fd, "unsigned int"); + fprintf(fd, " lttng_param_%s", field_name); + break; + case FLOAT: + fprintf(fd, "%s", floatOutputTypes[getSizeindex(td->size)]); + fprintf(fd, " lttng_param_%s", field_name); + break; + case POINTER: + fprintf(fd, "const void *"); + fprintf(fd, " lttng_param_%s", field_name); + break; + case LONG: + fprintf(fd, "long"); + fprintf(fd, " lttng_param_%s", field_name); + break; + case ULONG: + fprintf(fd, "unsigned long"); + fprintf(fd, " lttng_param_%s", field_name); + break; + case SIZE_T: + fprintf(fd, "size_t"); + fprintf(fd, " lttng_param_%s", field_name); + break; + case SSIZE_T: + fprintf(fd, "ssize_t"); + fprintf(fd, " lttng_param_%s", field_name); + break; + case OFF_T: + fprintf(fd, "off_t"); + fprintf(fd, " lttng_param_%s", field_name); + break; + case STRING: + fprintf(fd, "const char *"); + fprintf(fd, " lttng_param_%s", field_name); + break; + case ENUM: + fprintf(fd, "enum lttng_%s", basename); + fprintf(fd, " lttng_param_%s", field_name); + break; + case ARRAY: + fprintf(fd, "lttng_array_%s", basename); + fprintf(fd, " lttng_param_%s", field_name); + break; + case SEQUENCE: + fprintf(fd, "lttng_sequence_%s *", basename); + fprintf(fd, " lttng_param_%s", field_name); + break; + case STRUCT: + fprintf(fd, "struct lttng_%s *", basename); + fprintf(fd, " lttng_param_%s", field_name); + break; + case UNION: + fprintf(fd, "union lttng_%s *", basename); + fprintf(fd, " lttng_param_%s", field_name); + break; + default: + printf("print_type : unknown type\n"); + return 1; + } + + return 0; +} + + +/* Does the type has a fixed size ? (as know from the compiler) + * + * 1 : fixed size + * 0 : variable length + */ +int has_type_fixed_size(type_descriptor_t *td) +{ + switch(td->type) { + case INT_FIXED: + case UINT_FIXED: + case CHAR: + case UCHAR: + case SHORT: + case USHORT: + case INT: + case UINT: + case FLOAT: + case POINTER: + case LONG: + case ULONG: + case SIZE_T: + case SSIZE_T: + case OFF_T: + case ENUM: + case UNION: /* The union must have fixed size children. Must be checked by + the parser */ + return 1; + break; + case STRING: + case SEQUENCE: + return 0; + break; + case STRUCT: + { + int has_type_fixed = 0; + for(unsigned int i=0;ifields.position;i++){ + field_t *field = (field_t*)(td->fields.array[i]); + type_descriptor_t *type = field->type; + + has_type_fixed = has_type_fixed_size(type); + if(!has_type_fixed) return 0; + } + return 1; + } + break; + case ARRAY: + assert(td->size >= 0); + return has_type_fixed_size(((field_t*)td->fields.array[0])->type); + break; + case NONE: + printf("There is a type defined to NONE : bad.\n"); + assert(0); + break; + } + return 0; //make gcc happy. +} + + + + + +/* print type declaration. + * + * Copied from construct_types_and_fields in LTTV facility.c */ + +int print_type_declaration(type_descriptor_t * td, FILE *fd, unsigned int tabs, + char *nest_name, char *field_name) +{ + char basename[PATH_MAX]; + unsigned int basename_len = 0; + + if(td->custom_write) return 0; /* Does print custom type */ + + strncpy(basename, nest_name, PATH_MAX); + basename_len = strlen(basename); + + /* For a named type, we use the type_name directly */ + if(td->type_name != NULL) { + strncpy(basename, td->type_name, PATH_MAX); + basename_len = strlen(basename); + } else { + /* For a unnamed type, there must be a field name, except for + * the array. */ + if((basename_len != 0) + && (basename[basename_len-1] != '_' + && (field_name[0] != '\0'))) { + strncat(basename, "_", PATH_MAX - basename_len); + basename_len = strlen(basename); + } + strncat(basename, field_name, PATH_MAX - basename_len); + } + + switch(td->type) { + case ENUM: + fprintf(fd, "enum lttng_%s", basename); + fprintf(fd, " {\n"); + for(unsigned int i=0;ilabels.position;i++){ + print_tabs(1, fd); + fprintf(fd, "LTTNG_%s = %d", ((char*)td->labels.array[i]), + (*(int*)td->labels_values.array[i])); + fprintf(fd, ",\n"); + } + fprintf(fd, "};\n"); + fprintf(fd, "\n"); + break; + + case ARRAY: + dprintf("%s\n", basename); + assert(td->size >= 0); + if(((field_t*)td->fields.array[0])->type->type_name == NULL) { + /* Not a named nested type : we must print its declaration first */ + if(print_type_declaration(((field_t*)td->fields.array[0])->type, + fd, 0, basename, "")) return 1; + } + fprintf(fd, "#define LTTNG_ARRAY_SIZE_%s %zu\n", basename, + td->size); + fprintf(fd, "typedef "); + if(print_type(((field_t*)td->fields.array[0])->type, + fd, tabs, basename, "")) return 1; + fprintf(fd, " lttng_array_%s[LTTNG_ARRAY_SIZE_%s];\n", basename, + basename); + fprintf(fd, "\n"); + break; + case SEQUENCE: + /* We assume that the sequence length type does not need to be declared. + */ + if(((field_t*)td->fields.array[1])->type->type_name == NULL) { + /* Not a named nested type : we must print its declaration first */ + if(print_type_declaration(((field_t*)td->fields.array[1])->type, + fd, 0, basename, "")) return 1; + } + fprintf(fd, "typedef struct lttng_sequence_%s lttng_sequence_%s;\n", + basename, + basename); + fprintf(fd, "struct lttng_sequence_%s", basename); + fprintf(fd, " {\n"); + print_tabs(1, fd); + if(print_type(((field_t*)td->fields.array[0])->type, + fd, tabs, basename, "")) return 1; + fprintf(fd, " len;\n"); + print_tabs(1, fd); + fprintf(fd, "const "); + if(print_type(((field_t*)td->fields.array[1])->type, + fd, tabs, basename, "")) return 1; + fprintf(fd, " *array;\n"); + fprintf(fd, "};\n"); /* We do not LTT_ALIGN, because we never copy + it to the buffer directly. */ + fprintf(fd, "\n"); + break; + + case STRUCT: + for(unsigned int i=0;ifields.position;i++){ + field_t *field = (field_t*)(td->fields.array[i]); + type_descriptor_t *type = field->type; + if(type->type_name == NULL) { + /* Not a named nested type : we must print its declaration first */ + if(print_type_declaration(type, + fd, 0, basename, field->name)) return 1; + } + } + fprintf(fd, "struct lttng_%s", basename); + fprintf(fd, " {\n"); + for(unsigned int i=0;ifields.position;i++){ + field_t *field = (field_t*)(td->fields.array[i]); + type_descriptor_t *type = field->type; + print_tabs(1, fd); + if(print_type(type, fd, tabs, basename, field->name)) return 1; + fprintf(fd, " "); + fprintf(fd, "%s", field->name); + fprintf(fd, ";\n"); + } + fprintf(fd, "} LTT_ALIGN;\n"); + fprintf(fd, "\n"); + break; + case UNION: + for(unsigned int i=0;ifields.position;i++){ + field_t *field = (field_t*)(td->fields.array[i]); + type_descriptor_t *type = field->type; + if(type->type_name == NULL) { + /* Not a named nested type : we must print its declaration first */ + if(print_type_declaration(type, + fd, 0, basename, field->name)) return 1; + } + } + fprintf(fd, "union lttng_%s", basename); + fprintf(fd, " {\n"); + for(unsigned i=0;ifields.position;i++){ + field_t *field = (field_t*)(td->fields.array[i]); + type_descriptor_t *type = field->type; + print_tabs(1, fd); + if(print_type(type, fd, tabs, basename, field->name)) return 1; + fprintf(fd, " "); + fprintf(fd, "%s", field->name); + fprintf(fd, ";\n"); + } + fprintf(fd, "} LTT_ALIGN;\n"); + fprintf(fd, "\n"); + break; + default: + dprintf("print_type_declaration : unknown type or nothing to declare.\n"); + break; + } + + return 0; +} + + +/* print type alignment. + * + * Copied from construct_types_and_fields in LTTV facility.c + * + * basename is the name which identifies the type (along with a prefix + * (possibly)). */ + +int print_type_alignment(type_descriptor_t * td, FILE *fd, unsigned int tabs, + char *nest_name, char *field_name, char *obj_prefix) +{ + char basename[PATH_MAX]; + unsigned int basename_len = 0; + + strncpy(basename, nest_name, PATH_MAX); + basename_len = strlen(basename); + + /* For a named type, we use the type_name directly */ + if(td->type_name != NULL) { + strncpy(basename, td->type_name, PATH_MAX); + basename_len = strlen(basename); + } else { + /* For a unnamed type, there must be a field name, except for + * the array. */ + if((basename_len != 0) + && (basename[basename_len-1] != '_' + && field_name != NULL + && (field_name[0] != '\0'))) { + strncat(basename, "_", PATH_MAX - basename_len); + basename_len = strlen(basename); + } + if(field_name != NULL) + strncat(basename, field_name, PATH_MAX - basename_len); + } + + if(field_name[0] == '\0') { + /* We are in a write function : it's the obj that we must align. */ + switch(td->type) { + case SEQUENCE: + fprintf(fd, "lttng_get_alignment_sequence_%s(%s)", basename, + obj_prefix); + break; + case STRUCT: + fprintf(fd, "lttng_get_alignment_struct_%s(%s)", basename, + obj_prefix); + break; + case UNION: + fprintf(fd, "lttng_get_alignment_union_%s(%s)", basename, + obj_prefix); + break; + case ARRAY: + fprintf(fd, "lttng_get_alignment_array_%s(%s)", basename, + obj_prefix); + case STRING: + fprintf(fd, "sizeof(char)"); + break; + case INT_FIXED: + case UINT_FIXED: + case CHAR: + case UCHAR: + case SHORT: + case USHORT: + case INT: + case UINT: + case FLOAT: + case POINTER: + case LONG: + case ULONG: + case SIZE_T: + case SSIZE_T: + case OFF_T: + case ENUM: + fprintf(fd, "sizeof("); + if(print_type(td, fd, 0, basename, "")) return 1; + fprintf(fd, ")"); + break; + + default: + printf("error : type unexpected\n"); + return 1; + break; + } + } else { + + switch(td->type) { + case INT_FIXED: + case UINT_FIXED: + case CHAR: + case UCHAR: + case SHORT: + case USHORT: + case INT: + case UINT: + case FLOAT: + case POINTER: + case LONG: + case ULONG: + case SIZE_T: + case SSIZE_T: + case OFF_T: + case ENUM: + fprintf(fd, "sizeof("); + if(print_type(td, fd, 0, basename, "")) return 1; + fprintf(fd, ")"); + break; + case STRING: + fprintf(fd, "sizeof(char)"); + break; + case SEQUENCE: + fprintf(fd, "lttng_get_alignment_sequence_%s(&%s%s)", basename, + obj_prefix, field_name); + break; + case STRUCT: + fprintf(fd, "lttng_get_alignment_struct_%s(&%s%s)", basename, + obj_prefix, field_name); + break; + case UNION: + fprintf(fd, "lttng_get_alignment_union_%s(&%s%s)", basename, + obj_prefix, field_name); + break; + case ARRAY: + fprintf(fd, "lttng_get_alignment_array_%s(%s%s)", basename, + obj_prefix, field_name); + break; + case NONE: + printf("error : type NONE unexpected\n"); + return 1; + break; + } + } + + return 0; +} + +/* print type write. + * + * Copied from construct_types_and_fields in LTTV facility.c + * + * basename is the name which identifies the type (along with a prefix + * (possibly)). */ + +int print_type_write(type_descriptor_t * td, FILE *fd, unsigned int tabs, + char *nest_name, char *field_name, char *obj_prefix, int get_ptr) +{ + char basename[PATH_MAX]; + unsigned int basename_len = 0; + char get_ptr_char[2] = ""; + char custom[PATH_MAX] = ""; + + strncpy(basename, nest_name, PATH_MAX); + basename_len = strlen(basename); + + /* For a named type, we use the type_name directly */ + if(td->type_name != NULL) { + strncpy(basename, td->type_name, PATH_MAX); + basename_len = strlen(basename); + } else { + /* For a unnamed type, there must be a field name, except for + * the array. */ + if((basename_len != 0) + && (basename[basename_len-1] != '_' + && (field_name[0] != '\0'))) { + strncat(basename, "_", PATH_MAX - basename_len); + basename_len = strlen(basename); + } + strncat(basename, field_name, PATH_MAX - basename_len); + } + + if(get_ptr) { + strcpy(get_ptr_char, "&"); + } + + if(td->custom_write) { + strcpy(custom, "_custom"); + } + + switch(td->type) { + case INT_FIXED: + case UINT_FIXED: + case CHAR: + case UCHAR: + case SHORT: + case USHORT: + case INT: + case UINT: + case FLOAT: + case POINTER: + case LONG: + case ULONG: + case SIZE_T: + case SSIZE_T: + case OFF_T: + case ENUM: + print_tabs(tabs, fd); + fprintf(fd, "align = "); + if(print_type_alignment(td, fd, 0, basename, "", "obj")) return 1; + fprintf(fd, ";\n"); + fprintf(fd, "\n"); + print_tabs(tabs, fd); + fprintf(fd, "if(*len == 0) {\n"); + print_tabs(tabs+1, fd); + fprintf(fd, "*to += ltt_align(*to, align); /* align output */\n"); + print_tabs(tabs, fd); + fprintf(fd, "} else {\n"); + print_tabs(tabs+1, fd); + fprintf(fd, "*len += ltt_align(*to+*len, align); /* alignment, ok to do a memcpy of it */\n"); + print_tabs(tabs, fd); + fprintf(fd, "}\n"); + fprintf(fd, "\n"); + + print_tabs(tabs, fd); + fprintf(fd, "*len += "); + fprintf(fd, "sizeof("); + if(print_type(td, fd, 0, basename, "")) return 1; + fprintf(fd, ");\n"); + + break; + case STRING: + print_tabs(tabs, fd); + fprintf(fd, + "lttng_write%s_string_%s(buffer, to_base, to, from, len, %s%s);\n", + custom, basename, obj_prefix, field_name); + break; + case SEQUENCE: + print_tabs(tabs, fd); + fprintf(fd, + "lttng_write%s_sequence_%s(buffer, to_base, to, from, len, %s%s%s);", + custom, basename, get_ptr_char, obj_prefix, field_name); + break; + case STRUCT: + print_tabs(tabs, fd); + fprintf(fd, + "lttng_write%s_struct_%s(buffer, to_base, to, from, len, %s%s%s);", + custom, basename, get_ptr_char, obj_prefix, field_name); + break; + case UNION: + print_tabs(tabs, fd); + fprintf(fd, + "lttng_write%s_union_%s(buffer, to_base, to, from, len, %s%s%s);", + custom, basename, get_ptr_char, obj_prefix, field_name); + break; + case ARRAY: + print_tabs(tabs, fd); + fprintf(fd, + "lttng_write%s_array_%s(buffer, to_base, to, from, len, %s%s);", + custom, basename, obj_prefix, field_name); + break; + case NONE: + printf("Error : type NONE unexpected\n"); + return 1; + break; + } + + return 0; +} + +/* print need local vars ?. + * + * Copied from print_type_write + * + * Does the type_write call needs local size and from variables ? + * return value : 1 yes, 0 no. + */ + +int has_type_local(type_descriptor_t * td) +{ + switch(td->type) { + case INT_FIXED: + case UINT_FIXED: + case CHAR: + case UCHAR: + case SHORT: + case USHORT: + case INT: + case UINT: + case FLOAT: + case POINTER: + case LONG: + case ULONG: + case SIZE_T: + case SSIZE_T: + case OFF_T: + case ENUM: + return 1; + break; + case STRING: + case SEQUENCE: + case STRUCT: + case UNION: + case ARRAY: + return 0; + break; + case NONE: + printf("Error : type NONE unexpected\n"); + return 1; + break; + } + + return 0; +} + + + +/* print type alignment function. + * + * Copied from construct_types_and_fields in LTTV facility.c + * + * basename is the name which identifies the type (along with a prefix + * (possibly)). */ + +int print_type_alignment_fct(type_descriptor_t * td, FILE *fd, + unsigned int tabs, + char *nest_name, char *field_name) +{ + char basename[PATH_MAX]; + unsigned int basename_len = 0; + + if(td->custom_write) return 0; /* Does print custom type */ + + strncpy(basename, nest_name, PATH_MAX); + basename_len = strlen(basename); + + /* For a named type, we use the type_name directly */ + if(td->type_name != NULL) { + strncpy(basename, td->type_name, PATH_MAX); + basename_len = strlen(basename); + } else { + /* For a unnamed type, there must be a field name, except for + * the array. */ + if((basename_len != 0) + && (basename[basename_len-1] != '_' + && (field_name[0] != '\0'))) { + strncat(basename, "_", PATH_MAX - basename_len); + basename_len = strlen(basename); + } + strncat(basename, field_name, PATH_MAX - basename_len); + } + + switch(td->type) { + case SEQUENCE: + /* Function header */ + fprintf(fd, "static inline size_t lttng_get_alignment_sequence_%s(\n", + basename); + print_tabs(2, fd); + if(print_type(td, fd, 0, basename, "")) return 1; + fprintf(fd, " *obj)\n"); + fprintf(fd, "{\n"); + print_tabs(1, fd); + fprintf(fd, "size_t align=0, localign;"); + fprintf(fd, "\n"); + print_tabs(1, fd); + fprintf(fd, "localign = "); + if(print_type_alignment(((field_t*)td->fields.array[0])->type, + fd, 0, basename, "len", "obj->")) return 1; + fprintf(fd, ";\n"); + print_tabs(1, fd); + fprintf(fd, "align = max(align, localign);\n"); + fprintf(fd, "\n"); + print_tabs(1, fd); + fprintf(fd, "localign = "); + if(print_type_alignment(((field_t*)td->fields.array[1])->type, + fd, 0, basename, "array[0]", "obj->")) return 1; + fprintf(fd, ";\n"); + print_tabs(1, fd); + fprintf(fd, "align = max(align, localign);\n"); + fprintf(fd, "\n"); + print_tabs(1, fd); + fprintf(fd, "return align;\n"); + break; + case STRUCT: + /* Function header */ + fprintf(fd, "static inline size_t lttng_get_alignment_struct_%s(\n", + basename); + print_tabs(2, fd); + if(print_type(td, fd, 0, basename, "")) return 1; + fprintf(fd, " *obj)\n"); + fprintf(fd, "{\n"); + print_tabs(1, fd); + fprintf(fd, "size_t align=0, localign;"); + fprintf(fd, "\n"); + for(unsigned int i=0;ifields.position;i++){ + field_t *field = (field_t*)(td->fields.array[i]); + type_descriptor_t *type = field->type; + print_tabs(1, fd); + fprintf(fd, "localign = "); + if(print_type_alignment(type, fd, 0, basename, field->name, "obj->")) + return 1; + fprintf(fd, ";\n"); + print_tabs(1, fd); + fprintf(fd, "align = max(align, localign);\n"); + fprintf(fd, "\n"); + } + print_tabs(1, fd); + fprintf(fd, "return align;\n"); + + break; + case UNION: + /* Function header */ + fprintf(fd, "static inline size_t lttng_get_alignment_union_%s(\n", + basename); + print_tabs(2, fd); + if(print_type(td, fd, 0, basename, "")) return 1; + fprintf(fd, " *obj)\n"); + fprintf(fd, "{\n"); + print_tabs(1, fd); + fprintf(fd, "size_t align=0, localign;"); + fprintf(fd, "\n"); + for(unsigned int i=0;ifields.position;i++){ + field_t *field = (field_t*)(td->fields.array[i]); + type_descriptor_t *type = field->type; + print_tabs(1, fd); + fprintf(fd, "localign = "); + if(print_type_alignment(type, fd, 0, basename, field->name, "obj->")) + return 1; + fprintf(fd, ";\n"); + print_tabs(1, fd); + fprintf(fd, "align = max(align, localign);\n"); + fprintf(fd, "\n"); + } + print_tabs(1, fd); + fprintf(fd, "return align;\n"); + + break; + case ARRAY: + /* Function header */ + fprintf(fd, "static inline size_t lttng_get_alignment_array_%s(\n", + basename); + print_tabs(2, fd); + if(print_type(td, fd, 0, basename, "")) return 1; + fprintf(fd, " obj)\n"); + fprintf(fd, "{\n"); + print_tabs(1, fd); + fprintf(fd, "return \n"); + if(print_type_alignment(((field_t*)td->fields.array[0])->type, + fd, 0, basename, "", "obj[0]")) + return 1; + fprintf(fd, ";\n"); + break; + default: + dprintf("print_type_alignment_fct : type has no alignment function.\n"); + return 0; + break; + } + + + /* Function footer */ + fprintf(fd, "}\n"); + fprintf(fd, "\n"); + + return 0; +} + +/* print type write function. + * + * Copied from construct_types_and_fields in LTTV facility.c + * + * basename is the name which identifies the type (along with a prefix + * (possibly)). */ + +int print_type_write_fct(type_descriptor_t * td, FILE *fd, unsigned int tabs, + char *nest_name, char *field_name) +{ + char basename[PATH_MAX]; + unsigned int basename_len = 0; + + if(td->custom_write) return 0; /* Does print custom type */ + + strncpy(basename, nest_name, PATH_MAX); + basename_len = strlen(basename); + + /* For a named type, we use the type_name directly */ + if(td->type_name != NULL) { + strncpy(basename, td->type_name, PATH_MAX); + basename_len = strlen(basename); + } else { + /* For a unnamed type, there must be a field name, except for + * the array. */ + if((basename_len != 0) + && (basename[basename_len-1] != '_' + && (field_name[0] != '\0'))) { + strncat(basename, "_", PATH_MAX - basename_len); + basename_len = strlen(basename); + } + strncat(basename, field_name, PATH_MAX - basename_len); + } + + switch(td->type) { + case SEQUENCE: + case STRUCT: + case UNION: + case ARRAY: + case STRING: + break; + default: + dprintf("print_type_write_fct : type has no write function.\n"); + return 0; + break; + } + + /* Print header */ + switch(td->type) { + case SEQUENCE: + fprintf(fd, "static inline void lttng_write_sequence_%s(\n", + basename); + break; + case STRUCT: + fprintf(fd, "static inline void lttng_write_struct_%s(\n", basename); + break; + case UNION: + fprintf(fd, "static inline void lttng_write_union_%s(\n", basename); + break; + case ARRAY: + fprintf(fd, "static inline void lttng_write_array_%s(\n", basename); + break; + case STRING: + fprintf(fd, "static inline void lttng_write_string_%s(\n", basename); + break; + default: + printf("print_type_write_fct : type has no write function.\n"); + break; + } + + print_tabs(2, fd); + fprintf(fd, "void *buffer,\n"); + print_tabs(2, fd); + fprintf(fd, "size_t *to_base,\n"); + print_tabs(2, fd); + fprintf(fd, "size_t *to,\n"); + print_tabs(2, fd); + fprintf(fd, "const void **from,\n"); + print_tabs(2, fd); + fprintf(fd, "size_t *len,\n"); + print_tabs(2, fd); + if(print_type(td, fd, 0, basename, "")) return 1; + + switch(td->type) { + case SEQUENCE: + fprintf(fd, " *obj)\n"); + break; + case STRUCT: + fprintf(fd, " *obj)\n"); + break; + case UNION: + fprintf(fd, " *obj)\n"); + break; + case ARRAY: + fprintf(fd, " obj)\n"); + break; + case STRING: + fprintf(fd, " obj)\n"); + break; + default: + printf("print_type_write_fct : type has no write function.\n"); + break; + } + + fprintf(fd, "{\n"); + + switch(td->type) { + case STRING: + print_tabs(1, fd); + fprintf(fd, "size_t size;\n"); + break; + default: + break; + } + + print_tabs(1, fd); + fprintf(fd, "size_t align;\n"); + fprintf(fd, "\n"); + + switch(td->type) { + case SEQUENCE: + case STRING: + print_tabs(1, fd); + fprintf(fd, "/* Flush pending memcpy */\n"); + print_tabs(1, fd); + fprintf(fd, "if(*len != 0) {\n"); + print_tabs(2, fd); + fprintf(fd, "if(buffer != NULL)\n"); + print_tabs(3, fd); + fprintf(fd, "memcpy(buffer+*to_base+*to, *from, *len);\n"); + print_tabs(1, fd); + fprintf(fd, "}\n"); + print_tabs(1, fd); + fprintf(fd, "*to += *len;\n"); + print_tabs(1, fd); + fprintf(fd, "*len = 0;\n"); + fprintf(fd, "\n"); + break; + case STRUCT: + case UNION: + case ARRAY: + break; + default: + printf("print_type_write_fct : type has no write function.\n"); + break; + } + + print_tabs(1, fd); + fprintf(fd, "align = "); + if(print_type_alignment(td, fd, 0, basename, "", "obj")) return 1; + fprintf(fd, ";\n"); + fprintf(fd, "\n"); + print_tabs(1, fd); + fprintf(fd, "if(*len == 0) {\n"); + print_tabs(2, fd); + fprintf(fd, "*to += ltt_align(*to, align); /* align output */\n"); + print_tabs(1, fd); + fprintf(fd, "} else {\n"); + print_tabs(2, fd); + fprintf(fd, "*len += ltt_align(*to+*len, align); /* alignment, ok to do a memcpy of it */\n"); + print_tabs(1, fd); + fprintf(fd, "}\n"); + fprintf(fd, "\n"); + + /* First, check if the type has a fixed size. If it is the case, then the size + * to write is know by the compiler : simply use a sizeof() */ + if(has_type_fixed_size(td)) { + print_tabs(1, fd); + fprintf(fd, "/* Contains only fixed size fields : use compiler sizeof() */\n"); + fprintf(fd, "\n"); + print_tabs(1, fd); + fprintf(fd, "*len += sizeof("); + if(print_type(td, fd, 0, basename, field_name)) return 1; + fprintf(fd, ");\n"); + } else { + /* The type contains nested variable size subtypes : + * we must write field by field. */ + print_tabs(1, fd); + fprintf(fd, "/* Contains variable sized fields : must explode the structure */\n"); + fprintf(fd, "\n"); + + switch(td->type) { + case SEQUENCE: + print_tabs(1, fd); + fprintf(fd, "/* Copy members */\n"); +// print_tabs(1, fd); +// fprintf(fd, "size = sizeof(\n"); + if(print_type_write(((field_t*)td->fields.array[0])->type, + fd, 1, basename, "len", "obj->", 1)) return 1; + fprintf(fd, "\n"); +// fprintf(fd, ");\n"); +// print_tabs(1, fd); +// fprintf(fd, "*to += ltt_align(*to, size);\n"); + print_tabs(1, fd); + fprintf(fd, "if(buffer != NULL)\n"); + print_tabs(2, fd); + fprintf(fd, "memcpy(buffer+*to_base+*to, &obj->len, *len);\n"); + print_tabs(1, fd); + fprintf(fd, "*to += *len;\n"); + print_tabs(1, fd); + fprintf(fd, "*len = 0;\n"); + fprintf(fd, "\n"); + + /* Write the child : varlen child or not ? */ + if(has_type_fixed_size(((field_t*)td->fields.array[1])->type)) { + /* Fixed size len child : use a multiplication of its size */ +// print_tabs(1, fd); +// fprintf(fd, "size = sizeof(\n"); + + //print_tabs(1, fd); + /* We know that *len does not contain alignment because of the + * previous align output. len is always 0 here. */ + if(print_type_write(((field_t*)td->fields.array[1])->type, + fd, 1, basename, "array[0]", "obj->", 1)) + return 1; +// fprintf(fd, ");\n"); + fprintf(fd, "\n"); + print_tabs(1, fd); + fprintf(fd, "*len = obj->len * (*len);\n"); + print_tabs(1, fd); + fprintf(fd, "if(buffer != NULL)\n"); + print_tabs(2, fd); + fprintf(fd, "memcpy(buffer+*to_base+*to, obj->array, *len);\n"); + print_tabs(1, fd); + fprintf(fd, "*to += *len;\n"); + print_tabs(1, fd); + fprintf(fd, "*len = 0;\n"); + fprintf(fd, "\n"); + } else { + print_tabs(1, fd); + fprintf(fd, "/* Variable length child : iter. */\n"); + print_tabs(1, fd); + fprintf(fd, "for(unsigned int i=0; ilen; i++) {\n"); + if(print_type_write(((field_t*)td->fields.array[1])->type, + fd, 2, basename, "array[i]", "obj->", 1)) return 1; + print_tabs(1, fd); + fprintf(fd, "}\n"); + } + fprintf(fd, "\n"); + print_tabs(1, fd); + fprintf(fd, "/* Realign the *to_base on arch size, set *to to 0 */\n"); + print_tabs(1, fd); + fprintf(fd, "*to += ltt_align(*to, sizeof(void *));\n"); + print_tabs(1, fd); + fprintf(fd, "*to_base = *to_base+*to;\n"); + print_tabs(1, fd); + fprintf(fd, "*to = 0;\n"); + fprintf(fd, "\n"); + print_tabs(1, fd); + fprintf(fd, "/* Put source *from just after the C sequence */\n"); + print_tabs(1, fd); + fprintf(fd, "*from = obj+1;\n"); + break; + case STRING: + print_tabs(1, fd); + fprintf(fd, "size = strlen(obj) + 1; /* Include final NULL char. */\n"); + print_tabs(1, fd); + fprintf(fd, "if(buffer != NULL)\n"); + print_tabs(2, fd); + fprintf(fd, "memcpy(buffer+*to_base+*to, obj, size);\n"); + print_tabs(1, fd); + fprintf(fd, "*to += size;\n"); + fprintf(fd, "\n"); + print_tabs(1, fd); + fprintf(fd, "/* Realign the *to_base on arch size, set *to to 0 */\n"); + print_tabs(1, fd); + fprintf(fd, "*to += ltt_align(*to, sizeof(void *));\n"); + print_tabs(1, fd); + fprintf(fd, "*to_base = *to_base+*to;\n"); + print_tabs(1, fd); + fprintf(fd, "*to = 0;\n"); + fprintf(fd, "\n"); + print_tabs(1, fd); + fprintf(fd, "/* Put source *from just after the C string */\n"); + print_tabs(1, fd); + fprintf(fd, "*from += size;\n"); + break; + case STRUCT: + for(unsigned int i=0;ifields.position;i++){ + field_t *field = (field_t*)(td->fields.array[i]); + type_descriptor_t *type = field->type; + if(print_type_write(type, + fd, 1, basename, field->name, "obj->", 1)) return 1; + fprintf(fd, "\n"); + } + break; + case UNION: + printf("ERROR : A union CANNOT contain a variable size child.\n"); + return 1; + break; + case ARRAY: + /* Write the child : varlen child or not ? */ + if(has_type_fixed_size(((field_t*)td->fields.array[0])->type)) { + /* Error : if an array has a variable size, then its child must also + * have a variable size. */ + assert(0); + } else { + print_tabs(1, fd); + fprintf(fd, "/* Variable length child : iter. */\n"); + print_tabs(1, fd); + fprintf(fd, "for(unsigned int i=0; ifields.array[0])->type, + fd, 2, basename, "", "obj->array[i]", 1)) return 1; + print_tabs(1, fd); + fprintf(fd, "}\n"); + } + break; + default: + printf("print_type_write_fct : type has no write function.\n"); + break; + } + + + } + + + /* Function footer */ + fprintf(fd, "}\n"); + fprintf(fd, "\n"); + return 0; +} + + + +/* Print the logging function of an event. This is the core of genevent */ +int print_event_logging_function(char *basename, facility_t *fac, + event_t *event, FILE *fd) +{ + fprintf(fd, "static inline void trace_%s(\n", basename); + int has_argument = 0; + int has_type_fixed = 0; + + /* Does it support per trace tracing ? */ + if(event->per_trace) { + print_tabs(2, fd); + fprintf(fd, "struct ltt_trace_struct *dest_trace"); + has_argument = 1; + } + + /* Does it support per tracefile tracing ? */ + if(event->per_tracefile) { + if(has_argument) { + fprintf(fd, ","); + fprintf(fd, "\n"); + } + fprintf(fd, "unsigned int tracefile_index"); + has_argument = 1; + } + + for(unsigned int j = 0; j < event->fields.position; j++) { + /* For each field, print the function argument */ + field_t *f = (field_t*)event->fields.array[j]; + type_descriptor_t *t = f->type; + if(has_argument) { + fprintf(fd, ","); + fprintf(fd, "\n"); + } + if(print_arg(t, fd, 2, basename, f->name)) return 1; + has_argument = 1; + } + if(!has_argument) { + print_tabs(2, fd); + fprintf(fd, "void"); + } + fprintf(fd,")\n"); + fprintf(fd, + "#if (!defined(CONFIG_LTT) || !defined(CONFIG_LTT_FACILITY_%s))\n", + fac->capname); + fprintf(fd, "{\n"); + fprintf(fd, "}\n"); + fprintf(fd,"#else\n"); + fprintf(fd, "{\n"); + /* Print the function variables */ + print_tabs(1, fd); + fprintf(fd, "unsigned int index;\n"); + print_tabs(1, fd); + fprintf(fd, "struct ltt_channel_struct *channel;\n"); + print_tabs(1, fd); + fprintf(fd, "struct ltt_trace_struct *trace;\n"); + print_tabs(1, fd); + fprintf(fd, "struct rchan_buf *relayfs_buf;\n"); + print_tabs(1, fd); + fprintf(fd, "void *buffer = NULL;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t real_to_base = 0; /* The buffer is allocated on arch_size alignment */\n"); + print_tabs(1, fd); + fprintf(fd, "size_t *to_base = &real_to_base;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t real_to = 0;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t *to = &real_to;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t real_len = 0;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t *len = &real_len;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t reserve_size;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t slot_size;\n"); + print_tabs(1, fd); + + if(event->fields.position > 0) { + for(unsigned int i=0;ifields.position;i++){ + /* Search for at least one child with fixed size. It means + * we need local variables.*/ + field_t *field = (field_t*)(event->fields.array[i]); + type_descriptor_t *type = field->type; + has_type_fixed = has_type_local(type); + if(has_type_fixed) break; + } + + if(has_type_fixed) { + fprintf(fd, "size_t align;\n"); + print_tabs(1, fd); + } + + fprintf(fd, "const void *real_from;\n"); + print_tabs(1, fd); + fprintf(fd, "const void **from = &real_from;\n"); + print_tabs(1, fd); + } + fprintf(fd, "u64 tsc;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t before_hdr_pad, after_hdr_pad, header_size;\n"); + fprintf(fd, "\n"); + + print_tabs(1, fd); + fprintf(fd, "if(ltt_traces.num_active_traces == 0) return;\n"); + fprintf(fd, "\n"); + + /* Calculate event variable len + event data alignment offset. + * Assume that the padding for alignment starts at a void* + * address. + * This excludes the header size and alignment. */ + + print_tabs(1, fd); + fprintf(fd, "/* For each field, calculate the field size. */\n"); + print_tabs(1, fd); + fprintf(fd, "/* size = *to_base + *to + *len */\n"); + print_tabs(1, fd); + fprintf(fd, "/* Assume that the padding for alignment starts at a\n"); + print_tabs(1, fd); + fprintf(fd, " * sizeof(void *) address. */\n"); + fprintf(fd, "\n"); + + for(unsigned int i=0;ifields.position;i++){ + field_t *field = (field_t*)(event->fields.array[i]); + type_descriptor_t *type = field->type; + /* Set from */ + print_tabs(1, fd); + switch(type->type) { + case SEQUENCE: + case UNION: + case ARRAY: + case STRUCT: + case STRING: + fprintf(fd, "*from = lttng_param_%s;\n", field->name); + break; + default: + fprintf(fd, "*from = <tng_param_%s;\n", field->name); + break; + } + + if(print_type_write(type, + fd, 1, basename, field->name, "lttng_param_", 0)) return 1; + fprintf(fd, "\n"); + } + print_tabs(1, fd); + fprintf(fd, "reserve_size = *to_base + *to + *len;\n"); + + /* Take locks : make sure the trace does not vanish while we write on + * it. A simple preemption disabling is enough (using rcu traces). */ + print_tabs(1, fd); + fprintf(fd, "preempt_disable();\n"); + print_tabs(1, fd); + fprintf(fd, "ltt_nesting[smp_processor_id()]++;\n"); + + /* Get facility index */ + + if(event->per_tracefile) { + print_tabs(1, fd); + fprintf(fd, "index = tracefile_index;\n"); + } else { + print_tabs(1, fd); + fprintf(fd, + "index = ltt_get_index_from_facility(ltt_facility_%s_%X,\n"\ + "\t\t\t\t\t\tevent_%s_%s);\n", + fac->name, fac->checksum, fac->name, event->name); + } + fprintf(fd,"\n"); + + + /* For each trace */ + print_tabs(1, fd); + fprintf(fd, "list_for_each_entry_rcu(trace, <t_traces.head, list) {\n"); + print_tabs(2, fd); + fprintf(fd, "if(!trace->active) continue;\n\n"); + + if(event->per_trace) { + print_tabs(2, fd); + fprintf(fd, "if(dest_trace != trace) continue;\n\n"); + } + + print_tabs(2, fd); + fprintf(fd, "channel = ltt_get_channel_from_index(trace, index);\n"); + print_tabs(2, fd); + fprintf(fd, "relayfs_buf = channel->rchan->buf[smp_processor_id()];\n"); + fprintf(fd, "\n"); + + + /* Relay reserve */ + /* If error, increment event lost counter (done by ltt_reserve_slot) and + * return */ + print_tabs(2, fd); + fprintf(fd, "slot_size = 0;\n"); + print_tabs(2, fd); + fprintf(fd, "buffer = ltt_reserve_slot(trace, relayfs_buf,\n"); + print_tabs(3, fd); + fprintf(fd, "reserve_size, &slot_size, &tsc,\n"); + print_tabs(3, fd); + fprintf(fd, "&before_hdr_pad, &after_hdr_pad, &header_size);\n"); + /* If error, return */ + print_tabs(2, fd); + fprintf(fd, "if(!buffer) continue; /* buffer full */\n\n"); + //print_tabs(2, fd); + // for DEBUG only + // fprintf(fd, "goto commit; /* DEBUG : never actually write. */\n\n"); + print_tabs(2, fd); + fprintf(fd, "*to_base = *to = *len = 0;\n"); + fprintf(fd, "\n"); + + /* Write event header */ + print_tabs(2, fd); + fprintf(fd, "ltt_write_event_header(trace, channel, buffer,\n"); + print_tabs(3, fd); + fprintf(fd, "ltt_facility_%s_%X, event_%s_%s,\n", fac->name, fac->checksum, + fac->name, event->name); + print_tabs(3, fd); + fprintf(fd, "reserve_size, before_hdr_pad, tsc);\n"); + print_tabs(2, fd); + fprintf(fd, "*to_base += before_hdr_pad + after_hdr_pad + header_size;\n"); + fprintf(fd, "\n"); + + /* write data. */ + + for(unsigned int i=0;ifields.position;i++){ + field_t *field = (field_t*)(event->fields.array[i]); + type_descriptor_t *type = field->type; + + /* Set from */ + print_tabs(2, fd); + switch(type->type) { + case SEQUENCE: + case UNION: + case ARRAY: + case STRUCT: + case STRING: + fprintf(fd, "*from = lttng_param_%s;\n", field->name); + break; + default: + fprintf(fd, "*from = <tng_param_%s;\n", field->name); + break; + } + + + if(print_type_write(type, + fd, 2, basename, field->name, "lttng_param_", 0)) return 1; + fprintf(fd, "\n"); + + /* Don't forget to flush pending memcpy */ + print_tabs(2, fd); + fprintf(fd, "/* Flush pending memcpy */\n"); + print_tabs(2, fd); + fprintf(fd, "if(*len != 0) {\n"); + print_tabs(3, fd); + fprintf(fd, "memcpy(buffer+*to_base+*to, *from, *len);\n"); + print_tabs(3, fd); + fprintf(fd, "*to += *len;\n"); + //print_tabs(3, fd); + //fprintf(fd, "from += len;\n"); + print_tabs(3, fd); + fprintf(fd, "*len = 0;\n"); + print_tabs(2, fd); + fprintf(fd, "}\n"); + fprintf(fd, "\n"); + } + + + /* commit */ + // for DEBUG only. + //fprintf(fd, "commit:\n"); /* DEBUG! */ + print_tabs(2, fd); + fprintf(fd, "ltt_commit_slot(relayfs_buf, buffer, slot_size);\n\n"); + + print_tabs(1, fd); + fprintf(fd, "}\n\n"); + + /* Release locks */ + print_tabs(1, fd); + fprintf(fd, "ltt_nesting[smp_processor_id()]--;\n"); + print_tabs(1, fd); + fprintf(fd, "preempt_enable_no_resched();\n"); + + fprintf(fd, "}\n"); + fprintf(fd, "#endif //(!defined(CONFIG_LTT) || !defined(CONFIG_LTT_FACILITY_%s))\n\n", + fac->capname); + return 0; +} + +/* print_event_logging_function_user_generic + * Print the logging function of an event for userspace tracing. This is the + * core of genevent */ +int print_event_logging_function_user_generic(char *basename, facility_t *fac, + event_t *event, FILE *fd) +{ + char *attrib; + + fprintf(fd, "#ifndef LTT_TRACE_FAST\n"); + + if(event->no_instrument_function) { + attrib = "__attribute__((no_instrument_function)) "; + } else { + attrib = ""; + } + if(event->param_buffer) { + fprintf(fd, "static inline %sint trace_%s_param_buffer(\n", attrib, basename); + } else { + fprintf(fd, "static inline %sint trace_%s(\n",attrib, basename); + } + int has_argument = 0; + int has_type_fixed = 0; + + if(event->param_buffer) { + if(has_argument) { + fprintf(fd, ","); + fprintf(fd, "\n"); + } + print_tabs(2, fd); + fprintf(fd, "void *buffer"); + has_argument = 1; + fprintf(fd, ","); + fprintf(fd, "\n"); + print_tabs(2, fd); + fprintf(fd, "size_t reserve_size"); + } else { + for(unsigned int j = 0; j < event->fields.position; j++) { + /* For each field, print the function argument */ + field_t *f = (field_t*)event->fields.array[j]; + type_descriptor_t *t = f->type; + if(has_argument) { + fprintf(fd, ","); + fprintf(fd, "\n"); + } + if(print_arg(t, fd, 2, basename, f->name)) return 1; + has_argument = 1; + } + } + if(!has_argument) { + print_tabs(2, fd); + fprintf(fd, "void"); + } + fprintf(fd,")\n"); + fprintf(fd, + "#ifndef LTT_TRACE\n"); + fprintf(fd, "{\n"); + fprintf(fd, "}\n"); + fprintf(fd,"#else\n"); + fprintf(fd, "{\n"); + /* Print the function variables */ + print_tabs(1, fd); + fprintf(fd, "int ret = 0;\n"); + if(event->param_buffer) { + print_tabs(1, fd); + fprintf(fd, "reserve_size = ltt_align(reserve_size, sizeof(void *));\n"); + print_tabs(1, fd); + fprintf(fd, "{\n"); + goto do_syscall; + } + print_tabs(1, fd); + fprintf(fd, "void *buffer = NULL;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t real_to_base = 0; /* The buffer is allocated on arch_size alignment */\n"); + print_tabs(1, fd); + fprintf(fd, "size_t *to_base = &real_to_base;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t real_to = 0;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t *to = &real_to;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t real_len = 0;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t *len = &real_len;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t reserve_size;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t slot_size;\n"); + print_tabs(1, fd); + + if(event->fields.position > 0) { + for(unsigned int i=0;ifields.position;i++){ + /* Search for at least one child with fixed size. It means + * we need local variables.*/ + field_t *field = (field_t*)(event->fields.array[i]); + type_descriptor_t *type = field->type; + has_type_fixed = has_type_local(type); + if(has_type_fixed) break; + } + + if(has_type_fixed) { + fprintf(fd, "size_t align;\n"); + print_tabs(1, fd); + } + + fprintf(fd, "const void *real_from;\n"); + print_tabs(1, fd); + fprintf(fd, "const void **from = &real_from;\n"); + print_tabs(1, fd); + } + + /* Calculate event variable len + event data alignment offset. + * Assume that the padding for alignment starts at a void* + * address. + * This excludes the header size and alignment. */ + + print_tabs(1, fd); + fprintf(fd, "/* For each field, calculate the field size. */\n"); + print_tabs(1, fd); + fprintf(fd, "/* size = *to_base + *to + *len */\n"); + print_tabs(1, fd); + fprintf(fd, "/* Assume that the padding for alignment starts at a\n"); + print_tabs(1, fd); + fprintf(fd, " * sizeof(void *) address. */\n"); + fprintf(fd, "\n"); + + for(unsigned int i=0;ifields.position;i++){ + field_t *field = (field_t*)(event->fields.array[i]); + type_descriptor_t *type = field->type; + /* Set from */ + print_tabs(1, fd); + switch(type->type) { + case SEQUENCE: + case UNION: + case ARRAY: + case STRUCT: + case STRING: + fprintf(fd, "*from = lttng_param_%s;\n", field->name); + break; + default: + fprintf(fd, "*from = <tng_param_%s;\n", field->name); + break; + } -#include "genevent.h" -#include "parser.h" + if(print_type_write(type, + fd, 1, basename, field->name, "lttng_param_", 0)) return 1; + fprintf(fd, "\n"); + } + print_tabs(1, fd); + fprintf(fd, "reserve_size = *to_base + *to + *len;\n"); + print_tabs(1, fd); + fprintf(fd, "{\n"); + print_tabs(2, fd); + fprintf(fd, "char stack_buffer[reserve_size];\n"); + print_tabs(2, fd); + fprintf(fd, "buffer = stack_buffer;\n"); + fprintf(fd, "\n"); -#define TRUE 1 -#define FALSE (!TRUE) + + //print_tabs(2, fd); + // for DEBUG only + // fprintf(fd, "goto commit; /* DEBUG : never actually write. */\n\n"); + print_tabs(2, fd); + fprintf(fd, "*to_base = *to = *len = 0;\n"); + fprintf(fd, "\n"); -/* Code printing */ + /* write data. */ + + for(unsigned int i=0;ifields.position;i++){ + field_t *field = (field_t*)(event->fields.array[i]); + type_descriptor_t *type = field->type; + + /* Set from */ + print_tabs(2, fd); + switch(type->type) { + case SEQUENCE: + case UNION: + case ARRAY: + case STRUCT: + case STRING: + fprintf(fd, "*from = lttng_param_%s;\n", field->name); + break; + default: + fprintf(fd, "*from = <tng_param_%s;\n", field->name); + break; + } + + + if(print_type_write(type, + fd, 2, basename, field->name, "lttng_param_", 0)) return 1; + fprintf(fd, "\n"); + + /* Don't forget to flush pending memcpy */ + print_tabs(2, fd); + fprintf(fd, "/* Flush pending memcpy */\n"); + print_tabs(2, fd); + fprintf(fd, "if(*len != 0) {\n"); + print_tabs(3, fd); + fprintf(fd, "memcpy(buffer+*to_base+*to, *from, *len);\n"); + print_tabs(3, fd); + fprintf(fd, "*to += *len;\n"); + //print_tabs(3, fd); + //fprintf(fd, "from += len;\n"); + print_tabs(3, fd); + fprintf(fd, "*len = 0;\n"); + print_tabs(2, fd); + fprintf(fd, "}\n"); + fprintf(fd, "\n"); + } + +do_syscall: + print_tabs(2, fd); + fprintf(fd, "ret = ltt_trace_generic(ltt_facility_%s_%X, event_%s_%s, buffer, reserve_size, LTT_BLOCKING);\n", fac->name, fac->checksum, fac->name, event->name); + + print_tabs(1, fd); + fprintf(fd, "}\n\n"); + + print_tabs(1, fd); + fprintf(fd, "return ret;\n\n"); + + fprintf(fd, "}\n"); + fprintf(fd, + "#endif //LTT_TRACE\n"); + fprintf(fd, "#endif //!LTT_TRACE_FAST\n\n"); + + return 0; +} + +/* print_event_logging_function_user_fast + * Print the logging function of an event for userspace tracing. This is the + * core of genevent */ +int print_event_logging_function_user_fast(char *basename, facility_t *fac, + event_t *event, FILE *fd) +{ + char *attrib; + + fprintf(fd, "#ifdef LTT_TRACE_FAST\n"); + + if(event->no_instrument_function) { + attrib = "__attribute__((no_instrument_function)) "; + } else { + attrib = ""; + } + fprintf(fd, "static inline %sint trace_%s(\n",attrib, basename); + + int has_argument = 0; + int has_type_fixed = 0; + + for(unsigned int j = 0; j < event->fields.position; j++) { + /* For each field, print the function argument */ + field_t *f = (field_t*)event->fields.array[j]; + type_descriptor_t *t = f->type; + if(has_argument) { + fprintf(fd, ","); + fprintf(fd, "\n"); + } + if(print_arg(t, fd, 2, basename, f->name)) return 1; + has_argument = 1; + } + if(!has_argument) { + print_tabs(2, fd); + fprintf(fd, "void"); + } + fprintf(fd,")\n"); + fprintf(fd, + "#ifndef LTT_TRACE\n"); + fprintf(fd, "{\n"); + fprintf(fd, "}\n"); + fprintf(fd,"#else\n"); + fprintf(fd, "{\n"); + /* Print the function variables */ + print_tabs(1, fd); + fprintf(fd, "unsigned int index;\n"); + print_tabs(1, fd); + fprintf(fd, "struct ltt_trace_info *trace = thread_trace_info;\n"); + print_tabs(1, fd); + fprintf(fd, "struct ltt_buf *ltt_buf;\n"); + print_tabs(1, fd); + fprintf(fd, "void *buffer = NULL;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t real_to_base = 0; /* The buffer is allocated on arch_size alignment */\n"); + print_tabs(1, fd); + fprintf(fd, "size_t *to_base = &real_to_base;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t real_to = 0;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t *to = &real_to;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t real_len = 0;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t *len = &real_len;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t reserve_size;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t slot_size;\n"); + print_tabs(1, fd); + + if(event->fields.position > 0) { + for(unsigned int i=0;ifields.position;i++){ + /* Search for at least one child with fixed size. It means + * we need local variables.*/ + field_t *field = (field_t*)(event->fields.array[i]); + type_descriptor_t *type = field->type; + has_type_fixed = has_type_local(type); + if(has_type_fixed) break; + } + + if(has_type_fixed) { + fprintf(fd, "size_t align;\n"); + print_tabs(1, fd); + } + + fprintf(fd, "const void *real_from;\n"); + print_tabs(1, fd); + fprintf(fd, "const void **from = &real_from;\n"); + print_tabs(1, fd); + } + fprintf(fd, "uint64_t tsc;\n"); + print_tabs(1, fd); + fprintf(fd, "size_t before_hdr_pad, after_hdr_pad, header_size;\n"); + fprintf(fd, "\n"); + + print_tabs(1, fd); + fprintf(fd, "if(!trace) {\n"); + print_tabs(2, fd); + fprintf(fd, "ltt_thread_init();\n"); + print_tabs(2, fd); + fprintf(fd, "trace = thread_trace_info;\n"); + print_tabs(1, fd); + fprintf(fd, "}\n\n"); + fprintf(fd, "\n"); + + /* Calculate event variable len + event data alignment offset. + * Assume that the padding for alignment starts at a void* + * address. + * This excludes the header size and alignment. */ + + print_tabs(1, fd); + fprintf(fd, "/* For each field, calculate the field size. */\n"); + print_tabs(1, fd); + fprintf(fd, "/* size = *to_base + *to + *len */\n"); + print_tabs(1, fd); + fprintf(fd, "/* Assume that the padding for alignment starts at a\n"); + print_tabs(1, fd); + fprintf(fd, " * sizeof(void *) address. */\n"); + fprintf(fd, "\n"); + + for(unsigned int i=0;ifields.position;i++){ + field_t *field = (field_t*)(event->fields.array[i]); + type_descriptor_t *type = field->type; + /* Set from */ + print_tabs(1, fd); + switch(type->type) { + case SEQUENCE: + case UNION: + case ARRAY: + case STRUCT: + case STRING: + fprintf(fd, "*from = lttng_param_%s;\n", field->name); + break; + default: + fprintf(fd, "*from = <tng_param_%s;\n", field->name); + break; + } + + if(print_type_write(type, + fd, 1, basename, field->name, "lttng_param_", 0)) return 1; + fprintf(fd, "\n"); + } + print_tabs(1, fd); + fprintf(fd, "reserve_size = *to_base + *to + *len;\n"); + + print_tabs(1, fd); + fprintf(fd, "trace->nesting++;\n"); + + /* Get facility index */ + + print_tabs(1, fd); + fprintf(fd, + "index = ltt_get_index_from_facility(ltt_facility_%s_%X,\n"\ + "\t\t\t\t\t\tevent_%s_%s);\n", + fac->name, fac->checksum, fac->name, event->name); + fprintf(fd,"\n"); + + + print_tabs(1, fd); + fprintf(fd, "{\n"); + + if(event->per_trace) { + print_tabs(2, fd); + fprintf(fd, "if(dest_trace != trace) continue;\n\n"); + } + + print_tabs(2, fd); + fprintf(fd, "ltt_buf = ltt_get_channel_from_index(trace, index);\n"); + print_tabs(2, fd); + + + /* Relay reserve */ + /* If error, increment event lost counter (done by ltt_reserve_slot) and + * return */ + print_tabs(2, fd); + fprintf(fd, "slot_size = 0;\n"); + print_tabs(2, fd); + fprintf(fd, "buffer = ltt_reserve_slot(trace, ltt_buf,\n"); + print_tabs(3, fd); + fprintf(fd, "reserve_size, &slot_size, &tsc,\n"); + print_tabs(3, fd); + fprintf(fd, "&before_hdr_pad, &after_hdr_pad, &header_size);\n"); + /* If error, return */ + print_tabs(2, fd); + fprintf(fd, "if(!buffer) goto end; /* buffer full */\n\n"); + //print_tabs(2, fd); + // for DEBUG only + // fprintf(fd, "goto commit; /* DEBUG : never actually write. */\n\n"); + print_tabs(2, fd); + fprintf(fd, "*to_base = *to = *len = 0;\n"); + fprintf(fd, "\n"); + + /* Write event header */ + print_tabs(2, fd); + fprintf(fd, "ltt_write_event_header(trace, ltt_buf, buffer,\n"); + print_tabs(3, fd); + fprintf(fd, "ltt_facility_%s_%X, event_%s_%s,\n", fac->name, fac->checksum, + fac->name, event->name); + print_tabs(3, fd); + fprintf(fd, "reserve_size, before_hdr_pad, tsc);\n"); + print_tabs(2, fd); + fprintf(fd, "*to_base += before_hdr_pad + after_hdr_pad + header_size;\n"); + fprintf(fd, "\n"); + + /* write data. */ + + for(unsigned int i=0;ifields.position;i++){ + field_t *field = (field_t*)(event->fields.array[i]); + type_descriptor_t *type = field->type; + + /* Set from */ + print_tabs(2, fd); + switch(type->type) { + case SEQUENCE: + case UNION: + case ARRAY: + case STRUCT: + case STRING: + fprintf(fd, "*from = lttng_param_%s;\n", field->name); + break; + default: + fprintf(fd, "*from = <tng_param_%s;\n", field->name); + break; + } + + + if(print_type_write(type, + fd, 2, basename, field->name, "lttng_param_", 0)) return 1; + fprintf(fd, "\n"); + + /* Don't forget to flush pending memcpy */ + print_tabs(2, fd); + fprintf(fd, "/* Flush pending memcpy */\n"); + print_tabs(2, fd); + fprintf(fd, "if(*len != 0) {\n"); + print_tabs(3, fd); + fprintf(fd, "memcpy(buffer+*to_base+*to, *from, *len);\n"); + print_tabs(3, fd); + fprintf(fd, "*to += *len;\n"); + //print_tabs(3, fd); + //fprintf(fd, "from += len;\n"); + print_tabs(3, fd); + fprintf(fd, "*len = 0;\n"); + print_tabs(2, fd); + fprintf(fd, "}\n"); + fprintf(fd, "\n"); + } + + + /* commit */ + // for DEBUG only. + //fprintf(fd, "commit:\n"); /* DEBUG! */ + print_tabs(2, fd); + fprintf(fd, "ltt_commit_slot(ltt_buf, buffer, slot_size);\n\n"); + + fprintf(fd, "}\n\n"); + + fprintf(fd, "end:\n"); + /* Release locks */ + print_tabs(1, fd); + fprintf(fd, "trace->nesting--;\n"); + + + fprintf(fd, "}\n"); + fprintf(fd, + "#endif //LTT_TRACE\n"); + fprintf(fd, "#endif //LTT_TRACE_FAST\n"); + + return 0; +} + + + + + + +/* ltt-facility-name.h : main logging header. + * log_header */ + +void print_log_header_head(facility_t *fac, FILE *fd) +{ + fprintf(fd, "#ifndef _LTT_FACILITY_%s_H_\n", fac->capname); + fprintf(fd, "#define _LTT_FACILITY_%s_H_\n\n", fac->capname); + fprintf(fd, "#include \n"); + if(!fac->arch) + fprintf(fd, "#include \n", fac->name); + else + fprintf(fd, "#include \n", + fac->name, + fac->arch); + fprintf(fd, "#include \n"); + fprintf(fd, "\n"); +} + +/* ltt-facility-name.h : main logging header. + * log_header */ + +void print_log_header_head_user(facility_t *fac, FILE *fd) +{ + fprintf(fd, "#ifndef _LTT_FACILITY_%s_H_\n", fac->capname); + fprintf(fd, "#define _LTT_FACILITY_%s_H_\n\n", fac->capname); + fprintf(fd, "#include \n"); + if(!fac->arch) + fprintf(fd, "#include \n", fac->name); + else + fprintf(fd, "#include \n", + fac->name, + fac->arch); + fprintf(fd, "#include \n"); + fprintf(fd, "\n"); +} + + +int print_log_header_types(facility_t *fac, FILE *fd) +{ + sequence_t *types = &fac->named_types.values; + fprintf(fd, "/* Named types */\n"); + fprintf(fd, "\n"); + + for(unsigned int i = 0; i < types->position; i++) { + /* For each named type, print the definition */ + if(print_type_declaration(types->array[i], fd, + 0, "", "")) return 1; + /* Print also the align function */ + if(print_type_alignment_fct(types->array[i], fd, + 0, "", "")) return 1; + /* Print also the write function */ + if(print_type_write_fct(types->array[i], fd, + 0, "", "")) return 1; + } + return 0; +} + +int print_log_header_events(facility_t *fac, FILE *fd) +{ + sequence_t *events = &fac->events; + char basename[PATH_MAX]; + unsigned int facname_len; + + strncpy(basename, fac->name, PATH_MAX); + facname_len = strlen(basename); + strncat(basename, "_", PATH_MAX-facname_len); + facname_len = strlen(basename); + + for(unsigned int i = 0; i < events->position; i++) { + event_t *event = (event_t*)events->array[i]; + strncpy(&basename[facname_len], event->name, PATH_MAX-facname_len); + + /* For each event, print structure, and then logging function */ + fprintf(fd, "/* Event %s structures */\n", + event->name); + for(unsigned int j = 0; j < event->fields.position; j++) { + /* For each unnamed type, print the definition */ + field_t *f = (field_t*)event->fields.array[j]; + type_descriptor_t *t = f->type; + if(t->type_name == NULL) { + if((print_type_declaration(t, fd, 0, basename, f->name))) return 1; + /* Print also the align function */ + if((print_type_alignment_fct(t, fd, 0, basename, f->name))) return 1; + /* Print also the write function */ + if((print_type_write_fct(t, fd, 0, basename, f->name))) return 1; + } + } + + fprintf(fd, "\n"); + + fprintf(fd, "/* Event %s logging function */\n", + event->name); + + if(!fac->user) { + if(print_event_logging_function(basename, fac, event, fd)) return 1; + } else { + if(print_event_logging_function_user_generic(basename, fac, event, fd)) + return 1; + if(print_event_logging_function_user_fast(basename, fac, event, fd)) + return 1; + } + + fprintf(fd, "\n"); + } + + return 0; +} + + +void print_log_header_tail(facility_t *fac, FILE *fd) +{ + fprintf(fd, "#endif //_LTT_FACILITY_%s_H_\n",fac->capname); +} + +void print_log_header_tail_user(facility_t *fac, FILE *fd) +{ + fprintf(fd, "#endif //_LTT_FACILITY_%s_H_\n",fac->capname); +} + +int print_log_header(facility_t *fac) +{ + char filename[PATH_MAX]; + unsigned int filename_size = 0; + FILE *fd; + dprintf("%s\n", fac->name); + + strcpy(filename, "ltt-facility-"); + filename_size = strlen(filename); + + strncat(filename, fac->name, PATH_MAX - filename_size); + filename_size = strlen(filename); + + if(fac->arch) { + strncat(filename, "_", PATH_MAX - filename_size); + filename_size = strlen(filename); + + strncat(filename, fac->arch, PATH_MAX - filename_size); + filename_size = strlen(filename); + } + + strncat(filename, ".h", PATH_MAX - filename_size); + filename_size = strlen(filename); + + + fd = fopen(filename, "w"); + if(fd == NULL) { + printf("Error opening file %s for writing : %s\n", + filename, strerror(errno)); + return errno; + } + + /* Print file head */ + if(!fac->user) + print_log_header_head(fac, fd); + else + print_log_header_head_user(fac, fd); + + /* print named types in declaration order */ + if(print_log_header_types(fac, fd)) return 1; -/* Type size checking */ -int print_check(int fd); + /* Print events */ + if(print_log_header_events(fac, fd)) return 1; + + /* Print file tail */ + if(!fac->user) + print_log_header_tail(fac, fd); + else + print_log_header_tail_user(fac, fd); + + + + fclose(fd); + + return 0; +} + + +/* ltt-facility-id-name.h : facility id. + * log_id_header */ +int print_id_header(facility_t *fac) +{ + char filename[PATH_MAX]; + unsigned int filename_size = 0; + FILE *fd; + char basename[PATH_MAX]; + char basename_len = 0; + + dprintf("%s\n", fac->name); + + strcpy(filename, "ltt-facility-id-"); + filename_size = strlen(filename); + + strncat(filename, fac->name, PATH_MAX - filename_size); + filename_size = strlen(filename); + + if(fac->arch) { + strncat(filename, "_", PATH_MAX - filename_size); + filename_size = strlen(filename); + + strncat(filename, fac->arch, PATH_MAX - filename_size); + filename_size = strlen(filename); + } + + strncat(filename, ".h", PATH_MAX - filename_size); + filename_size = strlen(filename); + + + fd = fopen(filename, "w"); + if(fd == NULL) { + printf("Error opening file %s for writing : %s\n", + filename, strerror(errno)); + return errno; + } + + if(!fac->user) { + fprintf(fd, "#ifndef _LTT_FACILITY_ID_%s_H_\n",fac->capname); + fprintf(fd, "#define _LTT_FACILITY_ID_%s_H_\n\n",fac->capname); + fprintf(fd, "#ifdef CONFIG_LTT\n"); + + fprintf(fd,"#include \n\n"); + + fprintf(fd,"/**** facility handle ****/\n\n"); + fprintf(fd,"extern ltt_facility_t ltt_facility_%s_%X;\n", + fac->name, fac->checksum); + fprintf(fd,"extern ltt_facility_t ltt_facility_%s;\n\n\n",fac->name); + + strncpy(basename, fac->name, PATH_MAX); + basename_len = strlen(basename); + strncat(basename, "_", PATH_MAX - basename_len); + basename_len++; + + fprintf(fd,"/**** event index ****/\n\n"); + fprintf(fd,"enum %s_event {\n",fac->name); + + for(unsigned int i = 0; i < fac->events.position; i++) { + event_t *event = (event_t*)fac->events.array[i]; + strncpy(basename+basename_len, event->name, PATH_MAX-basename_len); + print_tabs(1, fd); + fprintf(fd, "event_%s,\n", basename); + } + print_tabs(1, fd); + fprintf(fd, "facility_%s_num_events\n", fac->name); + fprintf(fd, "};\n"); + fprintf(fd, "\n"); + + + fprintf(fd, "#endif //CONFIG_LTT\n"); + fprintf(fd, "#endif //_LTT_FACILITY_ID_%s_H_\n",fac->capname); + } else { + fprintf(fd, "#ifndef _LTT_FACILITY_ID_%s_H_\n",fac->capname); + fprintf(fd, "#define _LTT_FACILITY_ID_%s_H_\n\n",fac->capname); + fprintf(fd, "#ifdef LTT_TRACE\n"); + + fprintf(fd,"#include \n\n"); + + fprintf(fd,"/**** facility handle ****/\n\n"); + fprintf(fd,"extern ltt_facility_t ltt_facility_%s_%X;\n", + fac->name, fac->checksum); + fprintf(fd,"extern ltt_facility_t ltt_facility_%s;\n\n\n",fac->name); + + strncpy(basename, fac->name, PATH_MAX); + basename_len = strlen(basename); + strncat(basename, "_", PATH_MAX - basename_len); + basename_len++; + + fprintf(fd,"/**** event index ****/\n\n"); + fprintf(fd,"enum %s_event {\n",fac->name); + + for(unsigned int i = 0; i < fac->events.position; i++) { + event_t *event = (event_t*)fac->events.array[i]; + strncpy(basename+basename_len, event->name, PATH_MAX-basename_len); + print_tabs(1, fd); + fprintf(fd, "event_%s,\n", basename); + } + print_tabs(1, fd); + fprintf(fd, "facility_%s_num_events\n", fac->name); + fprintf(fd, "};\n"); + fprintf(fd, "\n"); + + + fprintf(fd, "#endif //LTT_TRACE\n"); + fprintf(fd, "#endif //_LTT_FACILITY_ID_%s_H_\n",fac->capname); + } + + + fclose(fd); + + return 0; +} + + +/* ltt-facility-loader-name.h : facility specific loader info. + * loader_header */ +int print_loader_header(facility_t *fac) +{ + char filename[PATH_MAX]; + unsigned int filename_size = 0; + FILE *fd; + dprintf("%s\n", fac->name); + + strcpy(filename, "ltt-facility-loader-"); + filename_size = strlen(filename); + + strncat(filename, fac->name, PATH_MAX - filename_size); + filename_size = strlen(filename); + + if(fac->arch) { + strncat(filename, "_", PATH_MAX - filename_size); + filename_size = strlen(filename); + + strncat(filename, fac->arch, PATH_MAX - filename_size); + filename_size = strlen(filename); + } + + strncat(filename, ".h", PATH_MAX - filename_size); + filename_size = strlen(filename); + + + fd = fopen(filename, "w"); + if(fd == NULL) { + printf("Error opening file %s for writing : %s\n", + filename, strerror(errno)); + return errno; + } + + fprintf(fd, "#ifndef _LTT_FACILITY_LOADER_%s_H_\n", fac->capname); + fprintf(fd, "#define _LTT_FACILITY_LOADER_%s_H_\n\n", fac->capname); + fprintf(fd, "#ifdef CONFIG_LTT\n\n"); + fprintf(fd,"#include \n"); + if(!fac->arch) + fprintf(fd,"#include \n\n", + fac->name); + else + fprintf(fd,"#include \n\n", + fac->name, + fac->arch); + fprintf(fd,"ltt_facility_t\tltt_facility_%s;\n", fac->name); + fprintf(fd,"ltt_facility_t\tltt_facility_%s_%X;\n\n", + fac->name, fac->checksum); + + fprintf(fd,"#define LTT_FACILITY_SYMBOL\t\t\t\t\t\t\tltt_facility_%s\n", + fac->name); + fprintf(fd,"#define LTT_FACILITY_CHECKSUM_SYMBOL\t\tltt_facility_%s_%X\n", + fac->name, fac->checksum); + fprintf(fd,"#define LTT_FACILITY_CHECKSUM\t\t\t\t\t\t0x%X\n", fac->checksum); + fprintf(fd,"#define LTT_FACILITY_NAME\t\t\t\t\t\t\t\t\"%s\"\n", fac->name); + fprintf(fd,"#define LTT_FACILITY_NUM_EVENTS\t\t\t\t\tfacility_%s_num_events\n\n", + fac->name); + fprintf(fd, "#endif //CONFIG_LTT\n\n"); + fprintf(fd, "#endif //_LTT_FACILITY_LOADER_%s_H_\n", fac->capname); + + fclose(fd); + + return 0; +} + +int print_loader_header_user(facility_t *fac) +{ + char filename[PATH_MAX]; + unsigned int filename_size = 0; + FILE *fd; + dprintf("%s\n", fac->name); + + strcpy(filename, "ltt-facility-loader-"); + filename_size = strlen(filename); + + strncat(filename, fac->name, PATH_MAX - filename_size); + filename_size = strlen(filename); + + if(fac->arch) { + strncat(filename, "_", PATH_MAX - filename_size); + filename_size = strlen(filename); + + strncat(filename, fac->arch, PATH_MAX - filename_size); + filename_size = strlen(filename); + } + + strncat(filename, ".h", PATH_MAX - filename_size); + filename_size = strlen(filename); + + + fd = fopen(filename, "w"); + if(fd == NULL) { + printf("Error opening file %s for writing : %s\n", + filename, strerror(errno)); + return errno; + } + + fprintf(fd, "#ifndef _LTT_FACILITY_LOADER_%s_H_\n", fac->capname); + fprintf(fd, "#define _LTT_FACILITY_LOADER_%s_H_\n\n", fac->capname); + fprintf(fd,"#include \n"); + if(!fac->arch) + fprintf(fd,"#include \n\n", + fac->name); + else + fprintf(fd,"#include \n\n", + fac->name, + fac->arch); + fprintf(fd,"ltt_facility_t\tltt_facility_%s;\n", fac->name); + fprintf(fd,"ltt_facility_t\tltt_facility_%s_%X;\n\n", + fac->name, fac->checksum); + + fprintf(fd,"#define LTT_FACILITY_SYMBOL\t\t\t\t\t\t\tltt_facility_%s\n", + fac->name); + fprintf(fd,"#define LTT_FACILITY_CHECKSUM_SYMBOL\t\tltt_facility_%s_%X\n", + fac->name, fac->checksum); + fprintf(fd,"#define LTT_FACILITY_CHECKSUM\t\t\t\t\t\t0x%X\n", fac->checksum); + fprintf(fd,"#define LTT_FACILITY_NAME\t\t\t\t\t\t\t\t\"%s\"\n", fac->name); + fprintf(fd,"#define LTT_FACILITY_NUM_EVENTS\t\t\t\t\tfacility_%s_num_events\n\n", + fac->name); + fprintf(fd, "#endif //_LTT_FACILITY_LOADER_%s_H_\n", fac->capname); + + fclose(fd); + + return 0; +} + + + +/* ltt-facility-loader-name.c : generic facility loader + * loader_c */ +int print_loader_c(facility_t *fac) +{ + char filename[PATH_MAX]; + unsigned int filename_size = 0; + FILE *fd; + dprintf("%s\n", fac->name); + + strcpy(filename, "ltt-facility-loader-"); + filename_size = strlen(filename); + + strncat(filename, fac->name, PATH_MAX - filename_size); + filename_size = strlen(filename); + + if(fac->arch) { + strncat(filename, "_", PATH_MAX - filename_size); + filename_size = strlen(filename); + + strncat(filename, fac->arch, PATH_MAX - filename_size); + filename_size = strlen(filename); + } + + strncat(filename, ".c", PATH_MAX - filename_size); + filename_size = strlen(filename); + + + fd = fopen(filename, "w"); + if(fd == NULL) { + printf("Error opening file %s for writing : %s\n", + filename, strerror(errno)); + return errno; + } + + fprintf(fd, "/*\n"); + if(!fac->arch) + fprintf(fd, " * ltt-facility-loader-%s.c\n", fac->name); + else + fprintf(fd, " * ltt-facility-loader-%s_%s.c\n", fac->name, fac->arch); + fprintf(fd, " *\n"); + fprintf(fd, " * (C) Copyright 2005 - \n"); + fprintf(fd, " * Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca)\n"); + fprintf(fd, " *\n"); + fprintf(fd, " * Contains the LTT facility loader.\n"); + fprintf(fd, " *\n"); + fprintf(fd, " */\n"); + fprintf(fd, "\n"); + fprintf(fd, "\n"); + fprintf(fd, "#include \n"); + fprintf(fd, "#include \n"); + fprintf(fd, "#include \n"); + fprintf(fd, "#include \n"); + if(!fac->arch) + fprintf(fd, "#include \"ltt-facility-loader-%s.h\"\n", fac->name); + else + fprintf(fd, "#include \"ltt-facility-loader-%s_%s.h\"\n", + fac->name, fac->arch); + fprintf(fd, "\n"); + fprintf(fd, "\n"); + fprintf(fd, "#ifdef CONFIG_LTT\n"); + fprintf(fd, "\n"); + fprintf(fd, "EXPORT_SYMBOL(LTT_FACILITY_SYMBOL);\n"); + fprintf(fd, "EXPORT_SYMBOL(LTT_FACILITY_CHECKSUM_SYMBOL);\n"); + fprintf(fd, "\n"); + fprintf(fd, "static const char ltt_facility_name[] = LTT_FACILITY_NAME;\n"); + fprintf(fd, "\n"); + fprintf(fd, "#define SYMBOL_STRING(sym) #sym\n"); + fprintf(fd, "\n"); + fprintf(fd, "static struct ltt_facility facility = {\n"); + fprintf(fd, "\t.name = ltt_facility_name,\n"); + fprintf(fd, "\t.num_events = LTT_FACILITY_NUM_EVENTS,\n"); + fprintf(fd, "\t.checksum = LTT_FACILITY_CHECKSUM,\n"); + fprintf(fd, "\t.symbol = SYMBOL_STRING(LTT_FACILITY_SYMBOL),\n"); + fprintf(fd, "};\n"); + fprintf(fd, "\n"); + fprintf(fd, "static int __init facility_init(void)\n"); + fprintf(fd, "{\n"); + fprintf(fd, "\tprintk(KERN_INFO \"LTT : ltt-facility-%s init in kernel\\n\");\n", fac->name); + fprintf(fd, "\n"); + fprintf(fd, "\tLTT_FACILITY_SYMBOL = ltt_facility_kernel_register(&facility);\n"); + fprintf(fd, "\tLTT_FACILITY_CHECKSUM_SYMBOL = LTT_FACILITY_SYMBOL;\n"); + fprintf(fd, "\t\n"); + fprintf(fd, "\treturn LTT_FACILITY_SYMBOL;\n"); + fprintf(fd, "}\n"); + fprintf(fd, "__initcall(facility_init);\n"); + fprintf(fd, "\n"); + fprintf(fd, "\n"); + fprintf(fd, "#ifndef MODULE\n"); + fprintf(fd, "\n"); + fprintf(fd, "static void __exit facility_exit(void)\n"); + fprintf(fd, "{\n"); + fprintf(fd, "\tint err;\n"); + fprintf(fd, "\n"); + fprintf(fd, "\terr = ltt_facility_unregister(LTT_FACILITY_SYMBOL);\n"); + fprintf(fd, "\tif(err != 0)\n"); + fprintf(fd, "\t\tprintk(KERN_ERR \"LTT : Error in unregistering facility.\\n\");\n"); + fprintf(fd, "\n"); + fprintf(fd, "}\n"); + fprintf(fd, "\n"); + fprintf(fd, "module_exit(facility_exit)\n"); + fprintf(fd, "\n"); + fprintf(fd, "\n"); + fprintf(fd, "MODULE_LICENSE(\"GPL\");\n"); + fprintf(fd, "MODULE_AUTHOR(\"Mathieu Desnoyers\");\n"); + fprintf(fd, "MODULE_DESCRIPTION(\"Linux Trace Toolkit Facility\");\n"); + fprintf(fd, "\n"); + fprintf(fd, "#endif //MODULE\n"); + fprintf(fd, "\n"); + fprintf(fd, "#endif //CONFIG_LTT\n"); + fclose(fd); -/* Print types */ -int print_types(int fd); + return 0; +} + +int print_loader_c_user(facility_t *fac) +{ + char filename[PATH_MAX]; + unsigned int filename_size = 0; + FILE *fd; + dprintf("%s\n", fac->name); + + strcpy(filename, "ltt-facility-loader-"); + filename_size = strlen(filename); + + strncat(filename, fac->name, PATH_MAX - filename_size); + filename_size = strlen(filename); + + if(fac->arch) { + strncat(filename, "_", PATH_MAX - filename_size); + filename_size = strlen(filename); + + strncat(filename, fac->arch, PATH_MAX - filename_size); + filename_size = strlen(filename); + } + + strncat(filename, ".c", PATH_MAX - filename_size); + filename_size = strlen(filename); + + + fd = fopen(filename, "w"); + if(fd == NULL) { + printf("Error opening file %s for writing : %s\n", + filename, strerror(errno)); + return errno; + } + + fprintf(fd, "/*\n"); + if(!fac->arch) + fprintf(fd, " * ltt-facility-loader-%s.c\n", fac->name); + else + fprintf(fd, " * ltt-facility-loader-%s_%s.c\n", fac->name, fac->arch); + fprintf(fd, " *\n"); + fprintf(fd, " * (C) Copyright 2005 - \n"); + fprintf(fd, " * Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca)\n"); + fprintf(fd, " *\n"); + fprintf(fd, " * Contains the LTT user space facility loader.\n"); + fprintf(fd, " *\n"); + fprintf(fd, " */\n"); + fprintf(fd, "\n"); + fprintf(fd, "\n"); + fprintf(fd, "#define LTT_TRACE\n"); + fprintf(fd, "#include \n"); + fprintf(fd, "#include \n"); + fprintf(fd, "#include \n"); + if(!fac->arch) + fprintf(fd, "#include \"ltt-facility-loader-%s.h\"\n", fac->name); + else + fprintf(fd, "#include \"ltt-facility-loader-%s_%s.h\"\n", + fac->name, fac->arch); + fprintf(fd, "\n"); + fprintf(fd, "static struct user_facility_info facility = {\n"); + fprintf(fd, "\t.name = LTT_FACILITY_NAME,\n"); + fprintf(fd, "\t.num_events = LTT_FACILITY_NUM_EVENTS,\n"); + fprintf(fd, "#ifndef LTT_PACK\n"); + fprintf(fd, "\t.alignment = sizeof(void*),\n"); + fprintf(fd, "#else\n"); + fprintf(fd, "\t.alignment = 0,\n"); + fprintf(fd, "#endif //LTT_PACK\n"); + fprintf(fd, "\t.checksum = LTT_FACILITY_CHECKSUM,\n"); + fprintf(fd, "\t.int_size = sizeof(int),\n"); + fprintf(fd, "\t.long_size = sizeof(long),\n"); + fprintf(fd, "\t.pointer_size = sizeof(void*),\n"); + fprintf(fd, "\t.size_t_size = sizeof(size_t)\n"); + fprintf(fd, "};\n"); + fprintf(fd, "\n"); + fprintf(fd, "static void __attribute__((constructor)) __ltt_user_init(void)\n"); + fprintf(fd, "{\n"); + fprintf(fd, "\tint err;\n"); + fprintf(fd, "#ifdef LTT_SHOW_DEBUG\n"); + fprintf(fd, "\tprintf(\"LTT : ltt-facility-%s init in userspace\\n\");\n", fac->name); + fprintf(fd, "#endif //LTT_SHOW_DEBUG\n"); + fprintf(fd, "\n"); + fprintf(fd, "\terr = ltt_register_generic(<T_FACILITY_SYMBOL, &facility);\n"); + fprintf(fd, "\tLTT_FACILITY_CHECKSUM_SYMBOL = LTT_FACILITY_SYMBOL;\n"); + fprintf(fd, "\t\n"); + fprintf(fd, "\tif(err) {\n"); + fprintf(fd, "#ifdef LTT_SHOW_DEBUG\n"); + fprintf(fd, "\t\tperror(\"Error in ltt_register_generic\");\n"); + fprintf(fd, "#endif //LTT_SHOW_DEBUG\n"); + fprintf(fd, "\t}\n"); + fprintf(fd, "}\n"); + fprintf(fd, "\n"); + + fclose(fd); + return 0; +} -/* Print events */ -int print_events(int fd); /* open facility */ @@ -104,7 +2734,6 @@ facility_t *ltt_facility_open(char * pathname) char *token; parse_file_t in; facility_t * fac = NULL; - unsigned long checksum; char buffer[BUFFER_SIZE]; int generated = FALSE; @@ -131,7 +2760,23 @@ facility_t *ltt_facility_open(char * pathname) if(strcmp(token, "<")) in.error(&in,"not a facility file"); token = getName(&in); + if(strcmp(token, "?")) in.error(&in,"not a facility file"); + token = getName(&in); + if(strcmp(token, "xml")) in.error(&in,"not a facility file"); + token = getName(&in); + if(strcmp(token, "version")) in.error(&in,"not a facility file"); + token = getName(&in); + if(strcmp(token, "=")) in.error(&in,"not a facility file"); + token = getQuotedString(&in); + if(strcmp(token, "1.0")) in.error(&in,"not a facility file"); + token = getName(&in); + if(strcmp(token, "?")) in.error(&in,"not a facility file"); + token = getToken(&in); + if(strcmp(token, ">")) in.error(&in,"not a facility file"); + token = getName(&in); + if(strcmp(token, "<")) in.error(&in,"not a facility file"); + token = getName(&in); if(strcmp("facility",token) == 0) { fac = malloc(sizeof(facility_t)); fac->name = NULL; @@ -145,8 +2790,8 @@ facility_t *ltt_facility_open(char * pathname) //check if any namedType is not defined checkNamedTypesImplemented(&fac->named_types); - generateChecksum(fac->name, &checksum, &fac->events); - + generateChecksum(fac->name, &fac->checksum, &fac->events); + generated = TRUE; } else { @@ -241,17 +2886,31 @@ int main(int argc, char **argv) /* generate the output C files */ - /* ltt-facility-name.h : main logging header */ - + /* ltt-facility-name.h : main logging header. + * log_header */ + err = print_log_header(fac); + if(err) return err; - /* ltt-facility-id-name.h : facility id. */ + /* ltt-facility-id-name.h : facility id. + * log_id_header */ + err = print_id_header(fac); + if(err) return err; + /* ltt-facility-loader-name.h : facility specific loader info. + * loader_header */ + if(!fac->user) + err = print_loader_header(fac); + else + err = print_loader_header_user(fac); + if(err) return err; - /* ltt-facility-loader-name.h : facility specific loader info. */ - - /* ltt-facility-loader-name.c : generic faciilty loader */ - - + /* ltt-facility-loader-name.c : generic faciilty loader + * loader_c */ + if(!fac->user) + err = print_loader_c(fac); + else + err = print_loader_c_user(fac); + if(err) return err; /* close the facility */ ltt_facility_close(fac);