Bobbin: Add first version of Bobbin.

A simple tool to help debug performance problems with
threads.

Build with BOBBIN defined, and all pthreads calls (or at
least all the ones gs uses) go through Bobbin. This keeps
track of the time each threads spends waiting on mutexes
or condition variables.

Hopefully this allows contention to be spotted.

A report is printed at the end.

1 files changed, 17 insertions, 0 deletions

diff --git a/base/gxsync.c b/base/gxsync.c
index fed51e9b4..a1326346a 100644
--- a/base/gxsync.c
+++ b/base/gxsync.c
@@ -76,6 +76,14 @@ gx_semaphore_free(
     }
 }
 
+gx_semaphore_t *(gx_semaphore_label)(gx_semaphore_t *sema, const char *name)
+{
+    (void)name;
+    if (sema)
+        gp_semaphore_label(&sema->native, name);
+    return sema;
+}
+
 /* Macros defined in gxsync.h, but redefined here so compiler chex consistency */
 #define gx_semaphore_wait(sema)  gp_semaphore_wait(&(sema)->native)
 #define gx_semaphore_signal(sema)  gp_semaphore_signal(&(sema)->native)
@@ -129,6 +137,15 @@ gx_monitor_free(
     }
 }
 
+gx_monitor_t *
+(gx_monitor_label)(gx_monitor_t *mon, const char *name)
+{
+    (void)name;
+    if (mon)
+        gp_monitor_label(&mon->native, name);
+    return mon;
+}
+
 /* Macros defined in gxsync.h, but redefined here so compiler chex consistency */
 #define gx_monitor_enter(sema)  gp_monitor_enter(&(sema)->native)
 #define gx_monitor_leave(sema)  gp_monitor_leave(&(sema)->native)