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// Copyright 2014-2023 David Robillard <d@drobilla.net>
// SPDX-License-Identifier: ISC
#undef NDEBUG
#include "failing_allocator.h"
#include <zix/allocator.h>
#include <zix/bump_allocator.h>
#include <assert.h>
#include <stddef.h>
#include <stdint.h>
static void
test_allocator(void)
{
// Just a basic smoke test to check that things seem to be working
ZixAllocator* const allocator = zix_default_allocator();
char* const malloced = (char*)zix_malloc(allocator, 4);
malloced[0] = 0;
malloced[3] = 3;
assert(malloced[0] == 0);
assert(malloced[3] == 3);
char* const calloced = (char*)zix_calloc(allocator, 4, 1);
assert(calloced[0] == 0);
assert(calloced[1] == 0);
assert(calloced[2] == 0);
assert(calloced[3] == 0);
char* const realloced = (char*)zix_realloc(allocator, calloced, 8);
assert(realloced[0] == 0);
assert(realloced[1] == 0);
assert(realloced[2] == 0);
assert(realloced[3] == 0);
realloced[4] = 4;
realloced[5] = 5;
realloced[6] = 6;
realloced[7] = 7;
assert(realloced[4] == 4);
assert(realloced[5] == 5);
assert(realloced[6] == 6);
assert(realloced[7] == 7);
char* const aligned = (char*)zix_aligned_alloc(allocator, 4096, 4096);
assert((uintptr_t)aligned % 4096 == 0);
aligned[0] = 0;
aligned[3] = 3;
assert(aligned[0] == 0);
assert(aligned[3] == 3);
zix_aligned_free(allocator, aligned);
zix_free(allocator, realloced);
zix_free(allocator, malloced);
}
static void
test_bump_allocator(void)
{
char buffer[1024] = {0};
ZixBumpAllocator allocator = zix_bump_allocator(sizeof(buffer), buffer);
assert(!zix_malloc(&allocator.base, 1025));
char* const malloced = (char*)zix_malloc(&allocator.base, 3);
assert(malloced >= buffer);
assert(malloced <= buffer + sizeof(buffer));
assert((uintptr_t)malloced % sizeof(uintmax_t) == 0U);
assert(!zix_calloc(&allocator.base, 1017, 1));
char* const calloced = (char*)zix_calloc(&allocator.base, 4, 1);
assert(calloced > malloced);
assert(calloced <= buffer + sizeof(buffer));
assert((uintptr_t)calloced % sizeof(uintmax_t) == 0U);
assert(!calloced[0]);
assert(!calloced[1]);
assert(!calloced[2]);
assert(!calloced[3]);
char* const realloced = (char*)zix_realloc(&allocator.base, calloced, 8);
assert(realloced == calloced);
assert(!zix_realloc(&allocator.base, malloced, 8)); // Not the top
assert(!zix_realloc(&allocator.base, realloced, 4089)); // No space
assert(!zix_calloc(&allocator.base, 4089, 1)); // No space
zix_free(&allocator.base, realloced);
char* const reclaimed = (char*)zix_malloc(&allocator.base, 512);
assert(reclaimed);
assert(reclaimed == realloced);
assert(!zix_aligned_alloc(&allocator.base, sizeof(uintmax_t), 1024));
assert(!zix_aligned_alloc(&allocator.base, 1024, 1024));
assert(!zix_aligned_alloc(&allocator.base, 2048, 2048));
assert(!zix_aligned_alloc(&allocator.base, 4096, 4096));
assert(!zix_aligned_alloc(&allocator.base, 8192, 8192));
assert(!zix_aligned_alloc(&allocator.base, 4096, 4096));
assert(!zix_aligned_alloc(&allocator.base, 2048, 2048));
assert(!zix_aligned_alloc(&allocator.base, 1024, 1024));
assert(!zix_aligned_alloc(&allocator.base, 512, 512));
char* const aligned = (char*)zix_aligned_alloc(&allocator.base, 128, 128);
assert(aligned);
assert(aligned >= reclaimed);
assert(aligned <= buffer + sizeof(buffer));
assert((uintptr_t)aligned % 128 == 0U);
assert(!zix_aligned_alloc(&allocator.base, 8, 896));
assert(zix_aligned_alloc(&allocator.base, 8, 8));
zix_aligned_free(&allocator.base, aligned);
zix_free(&allocator.base, reclaimed); // Correct, but a noop
zix_free(&allocator.base, malloced); // Correct, but a noop
}
static void
test_failing_allocator(void)
{
ZixFailingAllocator allocator = zix_failing_allocator();
zix_failing_allocator_reset(&allocator, 0);
assert(!zix_malloc(&allocator.base, 16U));
assert(!zix_calloc(&allocator.base, 16U, 1U));
assert(!zix_realloc(&allocator.base, NULL, 32U));
zix_free(&allocator.base, NULL);
assert(!zix_aligned_alloc(&allocator.base, 8U, 16U));
zix_aligned_free(&allocator.base, NULL);
}
int
main(void)
{
test_allocator();
test_bump_allocator();
test_failing_allocator();
return 0;
}
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