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Make improvements to locking

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This change makes pthread_mutex_lock() as fast as _spinlock() by
default. Thread instability issues on NetBSD have been resolved.
Improvements made to gdtoa thread code. Crash reporting will now
synchronize between threads in a slightly better way.
This commit is contained in:
Justine Tunney 2022-06-19 01:13:03 -07:00
parent 25041b8026
commit d5312b60f7
60 changed files with 890 additions and 629 deletions
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12
test/libc/intrin/memcmp_test.c
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@ -91,6 +91,7 @@ TEST(memcmp, fuzz) {
int buncmp(const void *, const void *, size_t) asm("bcmp");
int funcmp(const void *, const void *, size_t) asm("memcmp");
#if 0
BENCH(bcmp, bench) {
volatile int v;
const char *volatile a;
@ -135,7 +136,9 @@ BENCH(bcmp, bench) {
memcpy(b, a, 128 * 1024);
EZBENCH_N("bcmp", 131072, v = buncmp(a, b, 131072));
}
#endif
#if 0
BENCH(memcmp, bench) {
volatile int v;
const char *volatile a;
@ -180,7 +183,9 @@ BENCH(memcmp, bench) {
memcpy(b, a, 128 * 1024);
EZBENCH_N("memcmp", 131072, v = funcmp(a, b, 131072));
}
#endif
#if 0
BENCH(timingsafe_memcmp, bench) {
volatile int v;
const char *volatile a;
@ -225,7 +230,9 @@ BENCH(timingsafe_memcmp, bench) {
memcpy(b, a, 128 * 1024);
EZBENCH_N("timingsafe_memcmp", 131072, v = timingsafe_memcmp(a, b, 131072));
}
#endif
#if 0
BENCH(timingsafe_bcmp, bench) {
volatile int v;
const char *volatile a;
@ -270,7 +277,9 @@ BENCH(timingsafe_bcmp, bench) {
memcpy(b, a, 128 * 1024);
EZBENCH_N("timingsafe_bcmp", 131072, v = timingsafe_bcmp(a, b, 131072));
}
#endif
#if 0
BENCH(memcasecmp, bench) {
volatile int v;
const char *volatile a;
@ -315,7 +324,9 @@ BENCH(memcasecmp, bench) {
memcpy(b, a, 128 * 1024);
EZBENCH_N("memcasecmp", 131072, v = memcasecmp(a, b, 131072));
}
#endif
#if 0
BENCH(timingsafe_memcmp, demonstration) {
int bcmp_(const void *, const void *, size_t) asm("bcmp");
int memcmp_(const void *, const void *, size_t) asm("memcmp");
@ -339,3 +350,4 @@ BENCH(timingsafe_memcmp, demonstration) {
a[0] = b[0];
EZBENCH_N("timingsafe_memcmp eq", 256, timingsafe_memcmp(a, b, 256));
}
#endif