Fix: cache the result of getpid() internally

[lttng-ust.git] / liblttng-ust / lttng-context-vpid.c

diff --git a/liblttng-ust/lttng-context-vpid.c b/liblttng-ust/lttng-context-vpid.c
index b54ada1dd1a0ef953e9025f05f86239237bae582..53fb314b8c0da1bdf353f00c59c953879b4ed150 100644 (file)
--- a/liblttng-ust/lttng-context-vpid.c
+++ b/liblttng-ust/lttng-context-vpid.c
@@ -20,23 +20,13 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#define _LGPL_SOURCE
 #include <sys/types.h>
 #include <unistd.h>
 #include <lttng/ust-events.h>
 #include <lttng/ust-tracer.h>
 #include <lttng/ringbuffer-config.h>
 
-#ifdef __linux__
-static inline
-pid_t wrapper_getpid(void)
-{
-       return getpid();
-}
-
-void lttng_context_vpid_reset(void)
-{
-}
-#else
 /*
  * We cache the result to ensure we don't trigger a system call for
  * each event.
@@ -59,10 +49,9 @@ void lttng_context_vpid_reset(void)
 {
        cached_vpid = 0;
 }
-#endif
 
 static
-size_t vpid_get_size(size_t offset)
+size_t vpid_get_size(struct lttng_ctx_field *field, size_t offset)
 {
        size_t size = 0;
 
@@ -85,12 +74,12 @@ void vpid_record(struct lttng_ctx_field *field,
 
 static
 void vpid_get_value(struct lttng_ctx_field *field,
-               union lttng_ctx_value *value)
+               struct lttng_ctx_value *value)
 {
        pid_t pid;
 
        pid = wrapper_getpid();
-       value->s64 = pid;
+       value->u.s64 = pid;
 }
 
 int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx)