diff options
Diffstat (limited to 'src/backend/storage/ipc/ipc.c')
| -rw-r--r-- | src/backend/storage/ipc/ipc.c | 31 |
1 files changed, 14 insertions, 17 deletions
diff --git a/src/backend/storage/ipc/ipc.c b/src/backend/storage/ipc/ipc.c index 8f32e36301c..25c02877304 100644 --- a/src/backend/storage/ipc/ipc.c +++ b/src/backend/storage/ipc/ipc.c @@ -13,7 +13,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/storage/ipc/ipc.c,v 1.98 2007/11/04 17:55:15 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/storage/ipc/ipc.c,v 1.99 2007/11/15 21:14:38 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -118,34 +118,31 @@ proc_exit(int code) #ifdef PROFILE_PID_DIR { /* - * If we are profiling ourself then gprof's mcleanup() is about - * to write out a profile to ./gmon.out. Since mcleanup() always - * uses a fixed file name, each backend will overwrite earlier - * profiles. To fix that, we create a separate subdirectory for - * each backend (./gprof/pid) and 'cd' to that subdirectory before - * we exit() - that forces mcleanup() to write each profile into - * its own directory. We end up with something like: - * $PGDATA/gprof/8829/gmon.out - * $PGDATA/gprof/8845/gmon.out - * ... + * If we are profiling ourself then gprof's mcleanup() is about to + * write out a profile to ./gmon.out. Since mcleanup() always uses a + * fixed file name, each backend will overwrite earlier profiles. To + * fix that, we create a separate subdirectory for each backend + * (./gprof/pid) and 'cd' to that subdirectory before we exit() - that + * forces mcleanup() to write each profile into its own directory. We + * end up with something like: $PGDATA/gprof/8829/gmon.out + * $PGDATA/gprof/8845/gmon.out ... * * To avoid undesirable disk space bloat, autovacuum workers are * discriminated against: all their gmon.out files go into the same * subdirectory. Without this, an installation that is "just sitting * there" nonetheless eats megabytes of disk space every few seconds. * - * Note that we do this here instead of in an on_proc_exit() - * callback because we want to ensure that this code executes - * last - we don't want to interfere with any other on_proc_exit() - * callback. + * Note that we do this here instead of in an on_proc_exit() callback + * because we want to ensure that this code executes last - we don't + * want to interfere with any other on_proc_exit() callback. */ - char gprofDirName[32]; + char gprofDirName[32]; if (IsAutoVacuumWorkerProcess()) snprintf(gprofDirName, 32, "gprof/avworker"); else snprintf(gprofDirName, 32, "gprof/%d", (int) getpid()); - + mkdir("gprof", 0777); mkdir(gprofDirName, 0777); chdir(gprofDirName); |