43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/*
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* Thread-safety wrapper.
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* To be included in mm.c - you may assume this file exists, or else
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* (better!) implement your own version.
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*
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* Generally, #including .c files is fragile and not good style.
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* This is just a stop-gap solution.
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*/
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#include <pthread.h>
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static pthread_mutex_t malloc_lock = PTHREAD_MUTEX_INITIALIZER;
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void *_mm_malloc_thread_unsafe(size_t size);
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void _mm_free_thread_unsafe(void *bp);
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void *_mm_realloc_thread_unsafe(void *ptr, size_t size);
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void *mm_malloc(size_t size)
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{
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pthread_mutex_lock(&malloc_lock);
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void * p = _mm_malloc_thread_unsafe(size);
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pthread_mutex_unlock(&malloc_lock);
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return p;
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}
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void mm_free(void *bp)
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{
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pthread_mutex_lock(&malloc_lock);
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_mm_free_thread_unsafe(bp);
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pthread_mutex_unlock(&malloc_lock);
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}
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void *mm_realloc(void *ptr, size_t size)
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{
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pthread_mutex_lock(&malloc_lock);
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void * p = _mm_realloc_thread_unsafe(ptr, size);
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pthread_mutex_unlock(&malloc_lock);
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return p;
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}
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#define mm_malloc _mm_malloc_thread_unsafe
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#define mm_free _mm_free_thread_unsafe
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#define mm_realloc _mm_realloc_thread_unsafe
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