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fix alignment for mi_manage_os_memory (issue #980)

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Daan Leijen 2025-01-02 17:21:34 -08:00
parent b28e2bdd93
commit e8c27072a1
2 changed files with 47 additions and 2 deletions
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33
test/main-override-static.c
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@ -1,3 +1,6 @@
#if _WIN32
#include <windows.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
@ -22,12 +25,14 @@ static void negative_stat(void);
static void alloc_huge(void);
static void test_heap_walk(void);
static void test_canary_leak(void);
static void test_manage_os_memory(void);
// static void test_large_pages(void);
int main() {
mi_version();
mi_stats_reset();
test_manage_os_memory();
// test_large_pages();
// detect double frees and heap corruption
// double_free1();
@ -242,6 +247,34 @@ static void test_canary_leak(void) {
free(p);
}
#if _WIN32
static void test_manage_os_memory(void) {
size_t size = 256 * 1024 * 1024;
void* ptr = VirtualAlloc(NULL, size, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
mi_arena_id_t arena_id;
mi_manage_os_memory_ex(ptr, size, true /* committed */, true /* pinned */, false /* is zero */, -1 /* numa node */, true /* exclusive */, &arena_id);
mi_heap_t* cuda_heap = mi_heap_new_in_arena(arena_id); // you can do this in any thread
// now allocate only in the cuda arena
void* p1 = mi_heap_malloc(cuda_heap, 8);
int* p2 = mi_heap_malloc_tp(cuda_heap, int);
*p2 = 42;
// and maybe set the cuda heap as the default heap? (but careful as now `malloc` will allocate in the cuda heap as well)
{
mi_heap_t* prev_default_heap = mi_heap_set_default(cuda_heap);
void* p3 = mi_malloc(8); // allocate in the cuda heap
mi_free(p3);
}
mi_free(p1);
mi_free(p2);
}
#else
static void test_manage_os_memory(void) {
// empty
}
#endif
// Experiment with huge OS pages
#if 0