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| author | Rich Felker <dalias@aerifal.cx> | 2011-03-03 18:30:44 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2011-03-03 18:30:44 -0500 |
| commit | b480808a6a511c9350a6559b63938ac261c83a76 (patch) | |
| tree | e5479cfec9500cc5cd2db4466d7bab2847d64735 /src/thread/pthread_self.c | |
| parent | a53d2f3425aa32b5770b03acbab12d1df3af7226 (diff) | |
| download | musl-b480808a6a511c9350a6559b63938ac261c83a76.tar.gz | |
optimize POSIX TSD for fast pthread_getspecific
Diffstat (limited to 'src/thread/pthread_self.c')
| -rw-r--r-- | src/thread/pthread_self.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/thread/pthread_self.c b/src/thread/pthread_self.c index 3a4d4c58..028d387b 100644 --- a/src/thread/pthread_self.c +++ b/src/thread/pthread_self.c @@ -2,6 +2,10 @@ static struct pthread main_thread; +/* pthread_key_create.c overrides this */ +static const size_t dummy = 0; +weak_alias(dummy, __pthread_tsd_size); + #undef errno static int *errno_location() { @@ -10,6 +14,13 @@ static int *errno_location() static int init_main_thread() { + void *tsd = 0; + if (__pthread_tsd_size) { + tsd = mmap(0, __pthread_tsd_size, PROT_READ|PROT_WRITE, + MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); + if (tsd == MAP_FAILED) return -1; + } + main_thread.tsd = tsd; main_thread.self = &main_thread; if (__set_thread_area(&main_thread) < 0) return -1; |