!14 Implement mi_malloc_backtrace stub, fix test-mallinfo2

Merge pull request !14 from Frolikov Boris/implement-mi_malloc_backtrace-stub

CMakeLists.txt

@@ -381,7 +381,7 @@ endif()
 if (MI_BUILD_TESTS)
   enable_testing()
 
-  foreach(TEST_NAME api api-fill stress stats-print info mallinfo2 mallopt)
+  foreach(TEST_NAME api api-fill stress stats-print info mallinfo2 mallopt backtrace)
     add_executable(mimalloc-test-${TEST_NAME} test/test-${TEST_NAME}.c)
     target_compile_definitions(mimalloc-test-${TEST_NAME} PRIVATE ${mi_defines})
     target_compile_options(mimalloc-test-${TEST_NAME} PRIVATE ${mi_cflags})

include/mimalloc.h

@@ -397,6 +397,9 @@ mi_decl_export void mi_option_set(mi_option_t option, long value);
 mi_decl_export void mi_option_set_default(mi_option_t option, long value);
 mi_decl_export int mi_mallopt(int param, int value);
 
+// Stubs
+mi_decl_export ssize_t mi_malloc_backtrace(void *pointer, uintptr_t* frames, size_t frame_count);
+
 // -------------------------------------------------------------------------------------------------------
 // "mi" prefixed implementations of various posix, Unix, Windows, and C++ allocation functions.
 // (This can be convenient when providing overrides of these functions as done in `mimalloc-override.h`.)

src/alloc.c

@@ -953,6 +953,10 @@ void* mi_new_reallocn(void* p, size_t newcount, size_t size) {
   }
 }
 
+ssize_t mi_malloc_backtrace(void *pointer, uintptr_t* frames, size_t frame_count) {
+  return 0;
+}
+
 #define cap_max(x, MAX_VALUE) ((x > MAX_VALUE) ? MAX_VALUE : x)
 #define cap(x) cap_max(x, INT_MAX)
 #define cap2(x) cap_max(x, SIZE_MAX)

test/BUILD.gn

@@ -115,6 +115,9 @@ without_mimalloc_test("xmalloc-test-default") {
   sources = [ "perfomance/xmalloc-test.c" ]
 }
 
+mimalloc_unittest("test-backtrace") {
+}
+
 group("mimalloc_test") {
   testonly = true
   deps = [
@@ -122,6 +125,7 @@ group("mimalloc_test") {
     ":bench-malloc-thread-default",
     ":test-api",
     ":test-api-fill",
+    ":test-backtrace",
     ":test-disable",
     ":test-info",
     ":test-mallinfo2",

test/test-backtrace.c

@@ -0,0 +1,9 @@
+#include "mimalloc.h"
+#include "testhelper.h"
+
+int main(void) {
+    CHECK_BODY("test-mi_malloc_backtrace-stub", {
+        result = mi_malloc_backtrace(NULL, NULL, 0) == 0;
+    });
+    return print_test_summary();
+}

test/test-mallinfo2.c

@@ -1,8 +1,8 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>
-#include <malloc.h>
 #include <assert.h>
+#include "mimalloc.h"
 
 #define ALLOC_NUM 100
 
@@ -10,7 +10,7 @@ void test_mallinfo2(void)
 {
   struct mallinfo2 mi2;
 
-  mi2 = mallinfo2();
+  mi2 = mi_mallinfo2();
 
   assert(mi2.hblks);
   assert(mi2.hblkhd);