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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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3
libc/stdio/fflush.internal.h
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@ -1,5 +1,6 @@
#ifndef COSMOPOLITAN_LIBC_STDIO_FFLUSH_H_
#define COSMOPOLITAN_LIBC_STDIO_FFLUSH_H_
#include "libc/intrin/pthread.h"
#include "libc/stdio/stdio.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
@ -10,7 +11,7 @@ struct StdioFlushHandles {
};
struct StdioFlush {
int lock;
pthread_mutex_t lock;
struct StdioFlushHandles handles;
FILE *handles_initmem[8];
};