[pulseaudio-discuss] [PATCH 2/2] pulsecore: Make run-from-build not readlink() on every call

[Arun Raghavan]

Since this is no longer only defined in debug builds, let's make sure
that there is no impact if this is indavertently called repeatedly at
startup.
---
 src/pulsecore/core-util.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/pulsecore/core-util.c b/src/pulsecore/core-util.c
index 657e500..96cf4e8 100644
--- a/src/pulsecore/core-util.c
+++ b/src/pulsecore/core-util.c
@@ -3209,12 +3209,14 @@ void pa_reset_personality(void) {
 
 pa_bool_t pa_run_from_build_tree(void) {
     char *rp;
-    pa_bool_t b = FALSE;
+    static pa_bool_t b = FALSE;
 
-    if ((rp = pa_readlink("/proc/self/exe"))) {
-        b = pa_startswith(rp, PA_BUILDDIR);
-        pa_xfree(rp);
-    }
+    PA_ONCE_BEGIN {
+        if ((rp = pa_readlink("/proc/self/exe"))) {
+            b = pa_startswith(rp, PA_BUILDDIR);
+            pa_xfree(rp);
+        }
+    } PA_ONCE_END;
 
     return b;
 }
-- 
1.8.1.2