From b40ba9754b92508737d70364e7b39a7c7828edec Mon Sep 17 00:00:00 2001
From: Daniel Micay <danielmicay@gmail.com>
Date: Tue, 30 Apr 2019 16:54:58 -0400
Subject: [PATCH] add malloc_info test

---
 test/.gitignore    |  1 +
 test/Makefile      |  3 +++
 test/malloc_info.c | 28 ++++++++++++++++++++++++++++
 3 files changed, 32 insertions(+)
 create mode 100644 test/malloc_info.c

diff --git a/test/.gitignore b/test/.gitignore
index 1259e1e..591cace 100644
--- a/test/.gitignore
+++ b/test/.gitignore
@@ -1,3 +1,4 @@
 large_array_growth
 mallinfo
+malloc_info
 offset
diff --git a/test/Makefile b/test/Makefile
index dbcaa09..d772f05 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -4,12 +4,15 @@ ifeq (,$(filter $(CONFIG_SLAB_CANARY),true false))
     $(error CONFIG_SLAB_CANARY must be true or false)
 endif
 
+LDLIBS := -lpthread
+
 CPPFLAGS += \
     -DSLAB_CANARY=$(CONFIG_SLAB_CANARY)
 
 EXECUTABLES := \
     offset \
     mallinfo \
+    malloc_info \
     large_array_growth
 
 all: $(EXECUTABLES)
diff --git a/test/malloc_info.c b/test/malloc_info.c
new file mode 100644
index 0000000..c1590af
--- /dev/null
+++ b/test/malloc_info.c
@@ -0,0 +1,28 @@
+#include <pthread.h>
+
+#include <malloc.h>
+
+__attribute__((optimize(0)))
+void leak_memory(void) {
+    (void)malloc(1024 * 1024 * 1024);
+    (void)malloc(16);
+    (void)malloc(32);
+    (void)malloc(4096);
+}
+
+void *do_work(void *p) {
+    leak_memory();
+    return NULL;
+}
+
+int main(void) {
+    pthread_t thread[4];
+    for (int i = 0; i < 4; i++) {
+        pthread_create(&thread[i], NULL, do_work, NULL);
+    }
+    for (int i = 0; i < 4; i++) {
+        pthread_join(thread[i], NULL);
+    }
+
+    malloc_info(0, stdout);
+}