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Iterate more on recent changes

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Justine Tunney 2023-11-10 22:55:33 -08:00
parent 7138399f96
commit d0ad2694ed
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GPG key ID: BE714B4575D6E328
22 changed files with 90 additions and 158 deletions
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39
third_party/nsync/common.c vendored
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@ -19,7 +19,12 @@
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/dce.h"
#include "libc/intrin/dll.h"
#include "libc/intrin/extend.internal.h"
#include "libc/nt/enum/filemapflags.h"
#include "libc/nt/enum/pageflags.h"
#include "libc/nt/memory.h"
#include "libc/nt/runtime.h"
#include "libc/runtime/memtrack.internal.h"
#include "libc/sysv/consts/map.h"
#include "libc/sysv/consts/prot.h"
#include "libc/thread/tls.h"
@ -149,36 +154,28 @@ waiter *nsync_dll_waiter_samecond_ (struct Dll *e) {
/* -------------------------------- */
#define kMallocBlockSize 16384
static struct {
nsync_atomic_uint32_ mu;
size_t used;
char *block;
char *p, *e;
} malloc;
static void *nsync_malloc (size_t size) {
void *res;
ASSERT (size <= kMallocBlockSize);
if (IsWindows ()) {
res = HeapAlloc (GetProcessHeap (), 0, size);
if (!res) {
void *res = 0;
nsync_spin_test_and_set_ (&malloc.mu, 1, 1, 0);
if (malloc.p + malloc.used + size > malloc.e) {
if (!malloc.p) {
malloc.p = malloc.e = (char *)kMemtrackNsyncStart;
}
malloc.e = _extend (malloc.p, malloc.used + size, malloc.e, MAP_PRIVATE,
kMemtrackNsyncStart + kMemtrackNsyncSize);
if (!malloc.e) {
nsync_panic_ ("out of memory\n");
}
} else {
nsync_spin_test_and_set_ (&malloc.mu, 1, 1, 0);
if (!malloc.block || malloc.used + size > kMallocBlockSize) {
malloc.used = 0;
malloc.block = __sys_mmap (0, kMallocBlockSize, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0, 0);
if (malloc.block == MAP_FAILED) {
nsync_panic_ ("out of memory\n");
}
}
res = malloc.block + malloc.used;
malloc.used = (malloc.used + size + 15) & -16;
ATM_STORE_REL (&malloc.mu, 0);
}
res = malloc.p + malloc.used;
malloc.used = (malloc.used + size + 15) & -16;
ATM_STORE_REL (&malloc.mu, 0);
return res;
}