Add pthread id context

[lttng-ust.git] / libust / ltt-context.c

diff --git a/libust/ltt-context.c b/libust/ltt-context.c
index 83aa297592929d9d900cb52940fd25974e62ae03..7f8351ecd478326e2ea1c462ca1dcd14b290c025 100644 (file)
--- a/libust/ltt-context.c
+++ b/libust/ltt-context.c
@@ -3,15 +3,30 @@
  *
  * Copyright 2011 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
- * LTTng trace/channel/event context management.
+ * LTTng UST trace/channel/event context management.
  *
  * Dual LGPL v2.1/GPL v2 license.
  */
 
 #include <ust/lttng-events.h>
+#include <ust/lttng-tracer.h>
 #include <ust/core.h>
 #include <string.h>
-#include <ust/usterr-signal-safe.h>
+#include <assert.h>
+
+int lttng_find_context(struct lttng_ctx *ctx, const char *name)
+{
+       unsigned int i;
+
+       for (i = 0; i < ctx->nr_fields; i++) {
+               /* Skip allocated (but non-initialized) contexts */
+               if (!ctx->fields[i].event_field.name)
+                       continue;
+               if (!strcmp(ctx->fields[i].event_field.name, name))
+                       return 1;
+       }
+       return 0;
+}
 
 /*
  * Note: as we append context information, the pointer location may change.
@@ -54,7 +69,7 @@ void lttng_remove_context_field(struct lttng_ctx **ctx_p,
 
        ctx = *ctx_p;
        ctx->nr_fields--;
-       WARN_ON_ONCE(&ctx->fields[ctx->nr_fields] != field);
+       assert(&ctx->fields[ctx->nr_fields] == field);
        memset(&ctx->fields[ctx->nr_fields], 0, sizeof(struct lttng_ctx_field));
 }