26 lines
1.0 KiB
C
26 lines
1.0 KiB
C
#include "libc/limits.h"
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#include "libc/mem/mem.h"
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#include "third_party/dlmalloc/dlmalloc.h"
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/**
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* Sets the maximum number of bytes to obtain from the system, causing
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* failure returns from malloc and related functions upon attempts to
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* exceed this value. The argument value may be subject to page rounding
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* to an enforceable limit; this actual value is returned. Using an
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* argument of the maximum possible size_t effectively disables checks.
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* If the argument is less than or equal to the current
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* malloc_footprint, then all future allocations that require additional
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* system memory will fail. However, invocation cannot retroactively
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* deallocate existing used memory.
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*/
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size_t malloc_set_footprint_limit(size_t bytes) {
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size_t result; /* invert sense of 0 */
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if (bytes == 0) result = granularity_align(1); /* Use minimal size */
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if (bytes == SIZE_MAX) {
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result = 0; /* disable */
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} else {
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result = granularity_align(bytes);
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}
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return g_dlmalloc->footprint_limit = result;
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}
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