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add more detailed block info for heap visiting

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This commit is contained in:
daan 2020-04-06 23:39:09 -07:00
parent 120af372ab
commit 173978c122
5 changed files with 89 additions and 12 deletions
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41
test/main-override-static.c
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@ -7,6 +7,44 @@
#include <mimalloc.h>
#include <mimalloc-override.h> // redefines malloc etc.
typedef struct mi_visit_info_s {
size_t area_count;
size_t block_count;
} mi_visit_info_t;
static bool visit(const mi_heap_t* heap, const mi_heap_area_t* area, const mi_block_info_t* info, void* arg) {
mi_visit_info_t* varg = (mi_visit_info_t*)(arg);
if (info==NULL) {
printf(varg->area_count==0 ? " {" : " ]\n}\n,{");
varg->area_count++;
varg->block_count = 0;
printf("\"area\": %zu, \"start\": 0x%p, \"block_size\": %zu, \"used_size\": %zu,\n \"reserved\": %zu, \"committed\": %zu,", varg->area_count, area->blocks, area->block_size, area->used, area->reserved, area->committed);
printf(" \"blocks\": [\n");
}
else {
printf(varg->block_count==0 ? " {" : " ,{");
varg->block_count++;
printf("\"block\": 0x%p, \"valid\": %s, \"size\": %zu, \"usable_size\": %zu, \"allocated_size\": %zu,\n ", info->block, info->valid ? "true" : "false", info->size, info->usable_size, info->allocated_size);
int lineno;
const char* fname;
void* ret = mi_source_unpack(info->source, &fname, &lineno);
if (fname!=NULL) printf("\"source\": \"%s:%i\" }\n", fname, lineno);
else if (ret != NULL) printf("\"source\": \"(%p)\" }\n", ret);
else printf("\"source\": \"\" }\n");
}
}
static void mi_heap_to_json(mi_heap_t* heap) {
if (heap==NULL) heap = mi_heap_get_default();
mi_visit_info_t info = { 0, 0 };
printf("[\n");
mi_heap_visit_blocks(heap, true, &visit, &info);
printf(info.area_count==0 ? "]\n" : " ] }\n]\n");
}
static void double_free1();
static void double_free2();
static void corrupt_free();
@ -22,7 +60,7 @@ int main() {
// double_free2();
// corrupt_free();
// block_overflow1();
block_overflow2();
// block_overflow2();
// dangling_ptr_write();
void* p1 = malloc(78);
@ -52,7 +90,6 @@ static void block_overflow1() {
p[18] = 0;
free(p);
}
static void block_overflow2() {
void* p[100];
for (int i = 0; i < 100; i++) {