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Implement malloc_info(3).

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Expose jemalloc stats through the malloc_info(3) interface.

Bug: 16874689
Change-Id: I4358ac283002e60ff161107028d1a3fb1e9afb0a
This commit is contained in:
Dan Albert
2014-08-20 09:16:57 -07:00
parent d5fbc37119
commit 4caa1f0977
7 changed files with 229 additions and 0 deletions
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50
tests/malloc_test.cpp
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@@ -22,6 +22,8 @@
#include <malloc.h>
#include <unistd.h>
#include <tinyxml2.h>
#include "private/bionic_config.h"
TEST(malloc, malloc_std) {
@@ -322,3 +324,51 @@ TEST(malloc, valloc_overflow) {
ASSERT_EQ(NULL, valloc(SIZE_MAX));
}
#endif
TEST(malloc, malloc_info) {
#ifdef __BIONIC__
char* buf;
size_t bufsize;
FILE* memstream = open_memstream(&buf, &bufsize);
ASSERT_NE(nullptr, memstream);
ASSERT_EQ(0, malloc_info(0, memstream));
ASSERT_EQ(0, fclose(memstream));
tinyxml2::XMLDocument doc;
ASSERT_EQ(tinyxml2::XML_SUCCESS, doc.Parse(buf));
auto root = doc.FirstChildElement();
ASSERT_NE(nullptr, root);
ASSERT_STREQ("malloc", root->Name());
ASSERT_STREQ("jemalloc-1", root->Attribute("version"));
auto arena = root->FirstChildElement();
for (; arena != nullptr; arena = arena->NextSiblingElement()) {
int val;
ASSERT_STREQ("heap", arena->Name());
ASSERT_EQ(tinyxml2::XML_SUCCESS, arena->QueryIntAttribute("nr", &val));
ASSERT_EQ(tinyxml2::XML_SUCCESS,
arena->FirstChildElement("allocated-large")->QueryIntText(&val));
ASSERT_EQ(tinyxml2::XML_SUCCESS,
arena->FirstChildElement("allocated-huge")->QueryIntText(&val));
ASSERT_EQ(tinyxml2::XML_SUCCESS,
arena->FirstChildElement("allocated-bins")->QueryIntText(&val));
ASSERT_EQ(tinyxml2::XML_SUCCESS,
arena->FirstChildElement("bins-total")->QueryIntText(&val));
auto bin = arena->FirstChildElement("bin");
for (; bin != nullptr; bin = bin ->NextSiblingElement()) {
if (strcmp(bin->Name(), "bin") == 0) {
ASSERT_EQ(tinyxml2::XML_SUCCESS, bin->QueryIntAttribute("nr", &val));
ASSERT_EQ(tinyxml2::XML_SUCCESS,
bin->FirstChildElement("allocated")->QueryIntText(&val));
ASSERT_EQ(tinyxml2::XML_SUCCESS,
bin->FirstChildElement("nmalloc")->QueryIntText(&val));
ASSERT_EQ(tinyxml2::XML_SUCCESS,
bin->FirstChildElement("ndalloc")->QueryIntText(&val));
}
}
}
#endif
}