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Remove loops within futex signals on Linux

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This commit is contained in:
gingerBill
2023-01-02 22:13:49 +00:00
parent d36c3c2590
commit bc9ee8e1a4
2 changed files with 9 additions and 17 deletions
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2
src/check_decl.cpp
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@@ -1471,7 +1471,7 @@ gb_internal bool check_proc_body(CheckerContext *ctx_, Token token, DeclInfo *de
continue;
}
if (is_blank_ident(e->token)) {
error(e->token, "'using' a procedure parameter requires a non blank identifier");
error(e->token, "'using' a procedure parameter requires a non blank identifier");
break;
}

24
src/threading.cpp
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@@ -472,26 +472,18 @@ gb_internal void thread_set_name(Thread *t, char const *name) {
#include <sys/syscall.h>
gb_internal void futex_signal(Futex *addr) {
for (;;) {
int ret = syscall(SYS_futex, addr, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1, NULL, NULL, 0);
if (ret == -1) {
perror("Futex wake");
GB_PANIC("Failed in futex wake!\n");
} else if (ret > 0) {
return;
}
int ret = syscall(SYS_futex, addr, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1, NULL, NULL, 0);
if (ret == -1) {
perror("Futex wake");
GB_PANIC("Failed in futex wake!\n");
}
}
gb_internal void futex_broadcast(Futex *addr) {
for (;;) {
int ret = syscall(SYS_futex, addr, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, INT32_MAX, NULL, NULL, 0);
if (ret == -1) {
perror("Futex wake");
GB_PANIC("Failed in futex wake!\n");
} else if (ret > 0) {
return;
}
int ret = syscall(SYS_futex, addr, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, INT32_MAX, NULL, NULL, 0);
if (ret == -1) {
perror("Futex wake");
GB_PANIC("Failed in futex wake!\n");
}
}