From: compudj Date: Mon, 6 Mar 2006 04:02:35 +0000 (+0000) Subject: add usertrace-generic X-Git-Tag: v0.12.20~1912 X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=3d57eb5b47024332e1335d07217dceaa9d384887;p=lttv.git add usertrace-generic git-svn-id: http://ltt.polymtl.ca/svn@1577 04897980-b3bd-0310-b5e0-8ef037075253 --- diff --git a/usertrace-generic/Makefile b/usertrace-generic/Makefile new file mode 100644 index 00000000..94a5a6a2 --- /dev/null +++ b/usertrace-generic/Makefile @@ -0,0 +1,17 @@ + + +CC=gcc + +all: sample-thread sample + +sample-thread: sample-thread.c ltt-facility-loader-user_generic.c + $(CC) $(CFLAGS) -I. -lpthread -o $@ $^ + +sample: sample.c ltt-facility-loader-user_generic.c + $(CC) $(CFLAGS) -I. -o $@ $^ + +.PHONY : clean + +clean: + rm -fr *.o *~ sample-thread sample + diff --git a/usertrace-generic/ltt-facility-loader-user_generic.c b/usertrace-generic/ltt-facility-loader-user_generic.c new file mode 100644 index 00000000..292f407c --- /dev/null +++ b/usertrace-generic/ltt-facility-loader-user_generic.c @@ -0,0 +1,45 @@ +/* + * ltt-facility-loader-user_generic.c + * + * (C) Copyright 2005 - + * Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca) + * + * Contains the LTT user space facility loader. + * + */ + + +#define LTT_TRACE +#include +#include +#include +#include "ltt-facility-loader-user_generic.h" + +static struct user_facility_info facility = { + .name = LTT_FACILITY_NAME, + .num_events = LTT_FACILITY_NUM_EVENTS, +#ifndef LTT_PACK + .alignment = sizeof(void*), +#else + .alignment = 0, +#endif //LTT_PACK + .checksum = LTT_FACILITY_CHECKSUM, + .int_size = sizeof(int), + .long_size = sizeof(long), + .pointer_size = sizeof(void*), + .size_t_size = sizeof(size_t) +}; + +static void __attribute__((constructor)) __ltt_user_init(void) +{ + int err; + printf("LTT : ltt-facility-user_generic init in userspace\n"); + + err = ltt_register_generic(<T_FACILITY_SYMBOL, &facility); + LTT_FACILITY_CHECKSUM_SYMBOL = LTT_FACILITY_SYMBOL; + + if(err) { + perror("Error in ltt_register_generic"); + } +} + diff --git a/usertrace-generic/ltt-facility-loader-user_generic.h b/usertrace-generic/ltt-facility-loader-user_generic.h new file mode 100644 index 00000000..b64a240f --- /dev/null +++ b/usertrace-generic/ltt-facility-loader-user_generic.h @@ -0,0 +1,16 @@ +#ifndef _LTT_FACILITY_LOADER_USER_GENERIC_H_ +#define _LTT_FACILITY_LOADER_USER_GENERIC_H_ + +#include +#include + +ltt_facility_t ltt_facility_user_generic; +ltt_facility_t ltt_facility_user_generic_411B0F83; + +#define LTT_FACILITY_SYMBOL ltt_facility_user_generic +#define LTT_FACILITY_CHECKSUM_SYMBOL ltt_facility_user_generic_411B0F83 +#define LTT_FACILITY_CHECKSUM 0x411B0F83 +#define LTT_FACILITY_NAME "user_generic" +#define LTT_FACILITY_NUM_EVENTS facility_user_generic_num_events + +#endif //_LTT_FACILITY_LOADER_USER_GENERIC_H_ diff --git a/usertrace-generic/ltt/ltt-facility-id-user_generic.h b/usertrace-generic/ltt/ltt-facility-id-user_generic.h new file mode 100644 index 00000000..a488a51f --- /dev/null +++ b/usertrace-generic/ltt/ltt-facility-id-user_generic.h @@ -0,0 +1,22 @@ +#ifndef _LTT_FACILITY_ID_USER_GENERIC_H_ +#define _LTT_FACILITY_ID_USER_GENERIC_H_ + +#ifdef LTT_TRACE +#include + +/**** facility handle ****/ + +extern ltt_facility_t ltt_facility_user_generic_411B0F83; +extern ltt_facility_t ltt_facility_user_generic; + + +/**** event index ****/ + +enum user_generic_event { + event_user_generic_string, + event_user_generic_string_pointer, + facility_user_generic_num_events +}; + +#endif //LTT_TRACE +#endif //_LTT_FACILITY_ID_USER_GENERIC_H_ diff --git a/usertrace-generic/ltt/ltt-facility-user_generic.h b/usertrace-generic/ltt/ltt-facility-user_generic.h new file mode 100644 index 00000000..c5b9bd03 --- /dev/null +++ b/usertrace-generic/ltt/ltt-facility-user_generic.h @@ -0,0 +1,237 @@ +#ifndef _LTT_FACILITY_USER_GENERIC_H_ +#define _LTT_FACILITY_USER_GENERIC_H_ + +#include +#include +#include + +/* Named types */ + +/* Event string structures */ +static inline void lttng_write_string_user_generic_string_data( + void *buffer, + size_t *to_base, + size_t *to, + const void **from, + size_t *len, + const char * obj) +{ + size_t size; + size_t align; + + /* Flush pending memcpy */ + if(*len != 0) { + if(buffer != NULL) + memcpy(buffer+*to_base+*to, *from, *len); + } + *to += *len; + *len = 0; + + align = sizeof(char); + + if(*len == 0) { + *to += ltt_align(*to, align); /* align output */ + } else { + *len += ltt_align(*to+*len, align); /* alignment, ok to do a memcpy of it */ + } + + /* Contains variable sized fields : must explode the structure */ + + size = strlen(obj) + 1; /* Include final NULL char. */ + if(buffer != NULL) + memcpy(buffer+*to_base+*to, obj, size); + *to += size; + + /* Realign the *to_base on arch size, set *to to 0 */ + *to += ltt_align(*to, sizeof(void *)); + *to_base = *to_base+*to; + *to = 0; + + /* Put source *from just after the C string */ + *from += size; +} + + +/* Event string logging function */ +static inline int trace_user_generic_string( + const char * lttng_param_data) +#ifndef LTT_TRACE +{ +} +#else +{ + void *buffer = NULL; + size_t real_to_base = 0; /* The buffer is allocated on arch_size alignment */ + size_t *to_base = &real_to_base; + size_t real_to = 0; + size_t *to = &real_to; + size_t real_len = 0; + size_t *len = &real_len; + size_t reserve_size; + size_t slot_size; + int ret = 0; + const void *real_from; + const void **from = &real_from; + /* For each field, calculate the field size. */ + /* size = *to_base + *to + *len */ + /* Assume that the padding for alignment starts at a + * sizeof(void *) address. */ + + *from = lttng_param_data; + lttng_write_string_user_generic_string_data(buffer, to_base, to, from, len, lttng_param_data); + + reserve_size = *to_base + *to + *len; + { + char stack_buffer[reserve_size]; + buffer = stack_buffer; + + *to_base = *to = *len = 0; + + *from = lttng_param_data; + lttng_write_string_user_generic_string_data(buffer, to_base, to, from, len, lttng_param_data); + + /* Flush pending memcpy */ + if(*len != 0) { + memcpy(buffer+*to_base+*to, *from, *len); + *to += *len; + *len = 0; + } + + ret = ltt_trace_generic(ltt_facility_user_generic_411B0F83, event_user_generic_string, stack_buffer, sizeof(stack_buffer)); + } + + return ret; + +} +#endif //LTT_TRACE + +/* Event string_pointer structures */ +static inline void lttng_write_string_user_generic_string_pointer_string( + void *buffer, + size_t *to_base, + size_t *to, + const void **from, + size_t *len, + const char * obj) +{ + size_t size; + size_t align; + + /* Flush pending memcpy */ + if(*len != 0) { + if(buffer != NULL) + memcpy(buffer+*to_base+*to, *from, *len); + } + *to += *len; + *len = 0; + + align = sizeof(char); + + if(*len == 0) { + *to += ltt_align(*to, align); /* align output */ + } else { + *len += ltt_align(*to+*len, align); /* alignment, ok to do a memcpy of it */ + } + + /* Contains variable sized fields : must explode the structure */ + + size = strlen(obj) + 1; /* Include final NULL char. */ + if(buffer != NULL) + memcpy(buffer+*to_base+*to, obj, size); + *to += size; + + /* Realign the *to_base on arch size, set *to to 0 */ + *to += ltt_align(*to, sizeof(void *)); + *to_base = *to_base+*to; + *to = 0; + + /* Put source *from just after the C string */ + *from += size; +} + + +/* Event string_pointer logging function */ +static inline int trace_user_generic_string_pointer( + const char * lttng_param_string, + const void * lttng_param_pointer) +#ifndef LTT_TRACE +{ +} +#else +{ + void *buffer = NULL; + size_t real_to_base = 0; /* The buffer is allocated on arch_size alignment */ + size_t *to_base = &real_to_base; + size_t real_to = 0; + size_t *to = &real_to; + size_t real_len = 0; + size_t *len = &real_len; + size_t reserve_size; + size_t slot_size; + int ret = 0; + size_t align; + const void *real_from; + const void **from = &real_from; + /* For each field, calculate the field size. */ + /* size = *to_base + *to + *len */ + /* Assume that the padding for alignment starts at a + * sizeof(void *) address. */ + + *from = lttng_param_string; + lttng_write_string_user_generic_string_pointer_string(buffer, to_base, to, from, len, lttng_param_string); + + *from = <tng_param_pointer; + align = sizeof(const void *); + + if(*len == 0) { + *to += ltt_align(*to, align); /* align output */ + } else { + *len += ltt_align(*to+*len, align); /* alignment, ok to do a memcpy of it */ + } + + *len += sizeof(const void *); + + reserve_size = *to_base + *to + *len; + { + char stack_buffer[reserve_size]; + buffer = stack_buffer; + + *to_base = *to = *len = 0; + + *from = lttng_param_string; + lttng_write_string_user_generic_string_pointer_string(buffer, to_base, to, from, len, lttng_param_string); + + /* Flush pending memcpy */ + if(*len != 0) { + memcpy(buffer+*to_base+*to, *from, *len); + *to += *len; + *len = 0; + } + + *from = <tng_param_pointer; + align = sizeof(const void *); + + if(*len == 0) { + *to += ltt_align(*to, align); /* align output */ + } else { + *len += ltt_align(*to+*len, align); /* alignment, ok to do a memcpy of it */ + } + + *len += sizeof(const void *); + + /* Flush pending memcpy */ + if(*len != 0) { + memcpy(buffer+*to_base+*to, *from, *len); + *to += *len; + *len = 0; + } + + ret = ltt_trace_generic(ltt_facility_user_generic_411B0F83, event_user_generic_string_pointer, stack_buffer, sizeof(stack_buffer)); + } + + return ret; + +} +#endif //LTT_TRACE + +#endif //_LTT_FACILITY_USER_GENERIC_H_ diff --git a/usertrace-generic/ltt/ltt-generic.h b/usertrace-generic/ltt/ltt-generic.h new file mode 100644 index 00000000..ab9423d3 --- /dev/null +++ b/usertrace-generic/ltt/ltt-generic.h @@ -0,0 +1,78 @@ +/***************************************************************************** + * ltt-generic.h + * + * LTT generic userspace tracing header + * + * Mathieu Desnoyers, March 2006 + */ + +#ifndef _LTT_GENERIC_H +#define _LTT_GENERIC_H + +#include +#include +#include +#include +#include +#include +#include + +#ifndef min +#define min(a,b) ((a)<(b)?(a):(b)) +#endif + +//Put in asm-i486/unistd.h +#define __NR_ltt_trace_generic 294 +#define __NR_ltt_register_generic 295 + +#undef NR_syscalls +#define NR_syscalls 296 + +//FIXME : setup for ARM +//FIXME : setup for MIPS + +#ifndef _LIBC +// Put in bits/syscall.h +#define SYS_ltt_trace_generic __NR_ltt_trace_generic +#define SYS_ltt_register_generic __NR_ltt_register_generic +#endif + +#define FACNAME_LEN 32 + +typedef unsigned int ltt_facility_t; + +struct user_facility_info { + char name[FACNAME_LEN]; + unsigned int num_events; + size_t alignment; + uint32_t checksum; + size_t int_size; + size_t long_size; + size_t pointer_size; + size_t size_t_size; +}; + +static inline _syscall4(int, ltt_trace_generic, unsigned int, facility_id, + unsigned int, event_id, void *, data, size_t, data_size) +static inline _syscall2(int, ltt_register_generic, unsigned int *, facility_id, const struct user_facility_info *, info) + +#ifndef LTT_PACK +/* Calculate the offset needed to align the type */ +static inline unsigned int ltt_align(size_t align_drift, + size_t size_of_type) +{ + size_t alignment = min(sizeof(void*), size_of_type); + + return ((alignment - align_drift) & (alignment-1)); +} +#else +static inline unsigned int ltt_align(size_t align_drift, + size_t size_of_type) +{ + return 0; +} +#endif //LTT_PACK + +#endif //_LTT_GENERIC_H + + diff --git a/usertrace-generic/sample-thread.c b/usertrace-generic/sample-thread.c new file mode 100644 index 00000000..270f2c9e --- /dev/null +++ b/usertrace-generic/sample-thread.c @@ -0,0 +1,58 @@ + +#include +#include +#include +#include + +#define LTT_TRACE +#include + + +void *thr1(void *arg) +{ + printf("thread 1, thread id : %lu, pid %lu\n", pthread_self(), getpid()); + + while(1) { + trace_user_generic_string("Hello world! Have a nice day."); + sleep(2); + } + + return ((void*)1); + +} + +void *thr2(void *arg) +{ + printf("thread 2, thread id : %lu, pid %lu\n", pthread_self(), getpid()); + sleep(1); + while(1) { + trace_user_generic_string("Hello world! Have a nice day."); + sleep(2); + } + return ((void*)2); +} + + +int main() +{ + int err; + pthread_t tid1, tid2; + void *tret; + + printf("Will trace the following string : Hello world! Have a nice day.\n"); + printf("Press CTRL-C to stop.\n"); + printf("thread main, thread id : %lu, pid %lu\n", pthread_self(), getpid()); + err = pthread_create(&tid1, NULL, thr1, NULL); + if(err!=0) exit(1); + + err = pthread_create(&tid2, NULL, thr2, NULL); + if(err!=0) exit(1); + + err = pthread_join(tid1, &tret); + if(err!= 0) exit(1); + + err = pthread_join(tid2, &tret); + if(err!= 0) exit(1); + + return 0; +} diff --git a/usertrace-generic/sample.c b/usertrace-generic/sample.c new file mode 100644 index 00000000..7692ee72 --- /dev/null +++ b/usertrace-generic/sample.c @@ -0,0 +1,20 @@ + +#include +#include + +#define LTT_TRACE +#include + + +int main(int argc, char **argv) +{ + printf("Will trace the following string : Hello world! Have a nice day.\n"); + + while(1) { + trace_user_generic_string("Hello world! Have a nice day."); + sleep(1); + } + + return 0; +} + diff --git a/usertrace-generic/user_generic.xml b/usertrace-generic/user_generic.xml new file mode 100644 index 00000000..d4631947 --- /dev/null +++ b/usertrace-generic/user_generic.xml @@ -0,0 +1,15 @@ + + Generic user space facility + + + Takes a string from user space + + + + + Takes a string and pointer from user space + + + + +