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This makes it possible to use custom allocators, for example GC_malloc() when used in a garbage collected project. The code is an adaptation from libuv itself, which supports custom allocators.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| #include <uv.h> | ||
| #include "common.h" | ||
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| typedef struct { | ||
| tlsuv_malloc_func malloc; | ||
| tlsuv_realloc_func realloc; | ||
| tlsuv_calloc_func calloc; | ||
| tlsuv_free_func free; | ||
| } tlsuv__allocator_t; | ||
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| static tlsuv__allocator_t tlsuv__allocator = { | ||
| malloc, | ||
| realloc, | ||
| calloc, | ||
| free, | ||
| }; | ||
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| int tlsuv_replace_allocator(tlsuv_malloc_func malloc_func, | ||
| tlsuv_realloc_func realloc_func, | ||
| tlsuv_calloc_func calloc_func, | ||
| tlsuv_free_func free_func) { | ||
| if (malloc_func == NULL || realloc_func == NULL || | ||
| calloc_func == NULL || free_func == NULL) { | ||
| return UV_EINVAL; | ||
| } | ||
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| tlsuv__allocator.malloc = malloc_func; | ||
| tlsuv__allocator.realloc = realloc_func; | ||
| tlsuv__allocator.calloc = calloc_func; | ||
| tlsuv__allocator.free = free_func; | ||
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| return 0; | ||
| } | ||
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| void* tlsuv_malloc(size_t size) { | ||
| if (size > 0) | ||
| return tlsuv__allocator.malloc(size); | ||
| return NULL; | ||
| } | ||
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| void* tlsuv_realloc(void* ptr, size_t size) { | ||
| if (size > 0) | ||
| return tlsuv__allocator.realloc(ptr, size); | ||
| tlsuv_free(ptr); | ||
| return NULL; | ||
| } | ||
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| void* tlsuv_calloc(size_t count, size_t size) { | ||
| return tlsuv__allocator.calloc(count, size); | ||
| } | ||
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| void tlsuv_free(void* ptr) { | ||
| int saved_errno; | ||
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| /* The system allocator the assumption that errno is not modified but custom | ||
| * allocators may not be so careful. | ||
| */ | ||
| saved_errno = errno; | ||
| tlsuv__allocator.free(ptr); | ||
| errno = saved_errno; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| #pragma once | ||
| #include <stdlib.h> | ||
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| typedef void* (*tlsuv_malloc_func)(size_t size); | ||
| typedef void* (*tlsuv_malloc_func)(size_t size); | ||
| typedef void* (*tlsuv_realloc_func)(void* ptr, size_t size); | ||
| typedef void* (*tlsuv_calloc_func)(size_t count, size_t size); | ||
| typedef void (*tlsuv_free_func)(void* ptr); | ||
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| int tlsuv_replace_allocator(tlsuv_malloc_func malloc_func, | ||
| tlsuv_realloc_func realloc_func, | ||
| tlsuv_calloc_func calloc_func, | ||
| tlsuv_free_func free_func); | ||
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| void *tlsuv_malloc(size_t size); | ||
| void *tlsuv_realloc(void* ptr, size_t size); | ||
| void *tlsuv_calloc(size_t count, size_t size); | ||
| void tlsuv_free(void* ptr); |
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