From: compudj <compudj@04897980-b3bd-0310-b5e0-8ef037075253>
Date: Mon, 6 Mar 2006 16:01:38 +0000 (+0000)
Subject: add slow_printf support to generic
X-Git-Tag: v0.12.20~1907
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=1e08067e6117bec20132c95893616588f3e03ec7;p=lttv.git

add slow_printf support to generic

git-svn-id: http://ltt.polymtl.ca/svn@1582 04897980-b3bd-0310-b5e0-8ef037075253
---

diff --git a/genevent-new/genevent.c b/genevent-new/genevent.c
index f3768ce7..e640834d 100644
--- a/genevent-new/genevent.c
+++ b/genevent-new/genevent.c
@@ -1588,20 +1588,38 @@ int print_event_logging_function(char *basename, facility_t *fac,
 int print_event_logging_function_user(char *basename, facility_t *fac,
 		event_t *event, FILE *fd)
 {
-	fprintf(fd, "static inline int trace_%s(\n", basename);
+	if(event->param_buffer) {
+		fprintf(fd, "static inline int trace_%s_param_buffer(\n", basename);
+	} else {
+		fprintf(fd, "static inline int trace_%s(\n", 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(event->param_buffer) {
 		if(has_argument) {
-			fprintf(fd, ",");
-			fprintf(fd, "\n");
+				fprintf(fd, ",");
+				fprintf(fd, "\n");
 		}
-		if(print_arg(t, fd, 2, basename, f->name)) return 1;
+		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);
@@ -1616,6 +1634,15 @@ int print_event_logging_function_user(char *basename, facility_t *fac,
 	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");
@@ -1634,8 +1661,6 @@ int print_event_logging_function_user(char *basename, facility_t *fac,
 	print_tabs(1, fd);
 	fprintf(fd, "size_t slot_size;\n");
 	print_tabs(1, fd);
-	fprintf(fd, "int ret = 0;\n");
-	print_tabs(1, fd);
 
 	if(event->fields.position > 0) {
 		for(unsigned int i=0;i<event->fields.position;i++){
@@ -1758,9 +1783,9 @@ int print_event_logging_function_user(char *basename, facility_t *fac,
 		fprintf(fd, "\n");
 	}
 
-	
+do_syscall:
 	print_tabs(2, fd);
-	fprintf(fd, "ret = ltt_trace_generic(ltt_facility_%s_%X, event_%s_%s, stack_buffer, sizeof(stack_buffer));\n", fac->name, fac->checksum, fac->name, event->name);
+	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");
diff --git a/genevent-new/parser.c b/genevent-new/parser.c
index 3183367e..ba331e9e 100644
--- a/genevent-new/parser.c
+++ b/genevent-new/parser.c
@@ -247,6 +247,7 @@ void getEventAttributes(parse_file_t *in, event_t *ev)
   ev->name = NULL;
   ev->per_trace = 0;
   ev->per_tracefile = 0;
+  ev->param_buffer = 0;
 
   while(1) {
     token = getToken(in); 
@@ -265,7 +266,9 @@ void getEventAttributes(parse_file_t *in, event_t *ev)
       ev->per_trace = 1;
     } else if(!strcmp("per_tracefile", token)) {
       ev->per_tracefile = 1;
-    }
+    } else if(!strcmp("param_buffer", token)) {
+			ev->param_buffer = 1;
+		}
 
   }
 }
diff --git a/genevent-new/parser.h b/genevent-new/parser.h
index c0394049..7c579e00 100644
--- a/genevent-new/parser.h
+++ b/genevent-new/parser.h
@@ -134,6 +134,7 @@ typedef struct _event {
 	sequence_t fields;	/* event fields */
   int  per_trace;   /* Is the event able to be logged to a specific trace ? */
   int  per_tracefile;  /* Must we log this event in a specific tracefile ? */
+	int param_buffer; /* For userspace tracing : takes a buffer as parameter? */
 } event_t;
 
 typedef struct _facility {