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Make locks more reliable

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This change switches most of the core locks to be re-entrant, in order
to reduce the chance of deadlocking code that does, clever things with
asynchronous signal handlers. This change implements it it in pthreads
so we're one step closer to having a standardized threading primitives
This commit is contained in:
Justine Tunney 2022-06-11 01:59:26 -07:00
parent 5ea618f0af
commit c260345e06
35 changed files with 369 additions and 258 deletions
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4
libc/calls/sig.internal.h
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@ -23,11 +23,9 @@ struct Signals {
struct Signal mem[__SIG_QUEUE_LENGTH];
};
extern struct Signals __sig; // TODO(jart): Need TLS
extern long __sig_count;
extern struct Signals __sig;
void __sig_lock(void) hidden;
void __sig_unlock(void) hidden;
bool __sig_check(bool) hidden;
bool __sig_handle(bool, int, int, ucontext_t *) hidden;
int __sig_add(int, int) hidden;