78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
/*
|
|
* Copyright (C) 2014 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <inttypes.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
|
|
#include "LineBuffer.h"
|
|
#include "NativeInfo.h"
|
|
|
|
// This function is not re-entrant since it uses a static buffer for
|
|
// the line data.
|
|
void GetNativeInfo(int smaps_fd, size_t* pss_bytes, size_t* va_bytes) {
|
|
static char map_buffer[65535];
|
|
LineBuffer line_buf(smaps_fd, map_buffer, sizeof(map_buffer));
|
|
char* line;
|
|
size_t total_pss_bytes = 0;
|
|
size_t total_va_bytes = 0;
|
|
size_t line_len;
|
|
bool native_map = false;
|
|
while (line_buf.GetLine(&line, &line_len)) {
|
|
uintptr_t start, end;
|
|
int name_pos;
|
|
size_t native_pss_kB;
|
|
if (sscanf(line, "%" SCNxPTR "-%" SCNxPTR " %*4s %*x %*x:%*x %*d %n",
|
|
&start, &end, &name_pos) == 2) {
|
|
if (strcmp(line + name_pos, "[anon:libc_malloc]") == 0 ||
|
|
strcmp(line + name_pos, "[heap]") == 0) {
|
|
total_va_bytes += end - start;
|
|
native_map = true;
|
|
} else {
|
|
native_map = false;
|
|
}
|
|
} else if (native_map && sscanf(line, "Pss: %zu", &native_pss_kB) == 1) {
|
|
total_pss_bytes += native_pss_kB * 1024;
|
|
}
|
|
}
|
|
close(smaps_fd);
|
|
*pss_bytes = total_pss_bytes;
|
|
*va_bytes = total_va_bytes;
|
|
}
|
|
|
|
void PrintNativeInfo(const char* preamble) {
|
|
size_t pss_bytes;
|
|
size_t va_bytes;
|
|
|
|
int smaps_fd = open("/proc/self/smaps", O_RDONLY);
|
|
if (smaps_fd == -1) {
|
|
err(1, "Cannot open /proc/self/smaps: %s\n", strerror(errno));
|
|
}
|
|
|
|
GetNativeInfo(smaps_fd, &pss_bytes, &va_bytes);
|
|
printf("%sNative PSS: %zu bytes %0.2fMB\n", preamble, pss_bytes, pss_bytes/(1024*1024.0));
|
|
printf("%sNative VA Space: %zu bytes %0.2fMB\n", preamble, va_bytes, va_bytes/(1024*1024.0));
|
|
fflush(stdout);
|
|
|
|
close(smaps_fd);
|
|
}
|