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am 9be7caf3: Merge "Include stack traces for certain native processes in bugreport." into jb-dev

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* commit '9be7caf380b0e2fb29b8813fb8762c2ae417ce95':
  Include stack traces for certain native processes in bugreport.
This commit is contained in:
Jeff Brown 2012-06-08 15:30:38 -07:00 committed by Android Git Automerger
commit 4f0dfaa7c3
4 changed files with 82 additions and 38 deletions
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2
cmds/dumpstate/Android.mk
View File

@ -16,4 +16,6 @@ LOCAL_STATIC_LIBRARIES := $(BOARD_LIB_DUMPSTATE)
LOCAL_CFLAGS += -DBOARD_HAS_DUMPSTATE
endif
LOCAL_CFLAGS += -Wall -Wno-unused-parameter -std=gnu99
include $(BUILD_EXECUTABLE)

4
cmds/dumpstate/dumpstate.c
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@ -324,8 +324,8 @@ int main(int argc, char *argv[]) {
fclose(oom_adj);
}
/* very first thing, collect VM traces from Dalvik (needs root) */
dump_traces_path = dump_vm_traces();
/* very first thing, collect stack traces from Dalvik and native processes (needs root) */
dump_traces_path = dump_traces();
int c;
while ((c = getopt(argc, argv, "b:de:ho:svzp")) != -1) {

4
cmds/dumpstate/dumpstate.h
View File

@ -38,8 +38,8 @@ void redirect_to_socket(FILE *redirect, const char *service);
/* redirect output to a file, optionally gzipping; returns gzip pid */
pid_t redirect_to_file(FILE *redirect, char *path, int gzip_level);
/* dump Dalvik stack traces, return the trace file location (NULL if none) */
const char *dump_vm_traces();
/* dump Dalvik and native stack traces, return the trace file location (NULL if none) */
const char *dump_traces();
/* for each process in the system, run the specified function */
void for_each_pid(void (*func)(int, const char *), const char *header);

110
cmds/dumpstate/utils.c
View File

@ -32,12 +32,21 @@
#include <time.h>
#include <unistd.h>
#include <cutils/debugger.h>
#include <cutils/properties.h>
#include <cutils/sockets.h>
#include <private/android_filesystem_config.h>
#include "dumpstate.h"
/* list of native processes to include in the native dumps */
static const char* native_processes_to_dump[] = {
"/system/bin/mediaserver",
"/system/bin/sdcard",
"/system/bin/surfaceflinger",
NULL,
};
void for_each_pid(void (*func)(int, const char *), const char *header) {
DIR *d;
struct dirent *de;
@ -352,8 +361,19 @@ pid_t redirect_to_file(FILE *redirect, char *path, int gzip_level) {
return gzip_pid;
}
/* dump Dalvik stack traces, return the trace file location (NULL if none) */
const char *dump_vm_traces() {
static bool should_dump_native_traces(const char* path) {
for (const char** p = native_processes_to_dump; *p; p++) {
if (!strcmp(*p, path)) {
return true;
}
}
return false;
}
/* dump Dalvik and native stack traces, return the trace file location (NULL if none) */
const char *dump_traces() {
const char* result = NULL;
char traces_path[PROPERTY_VALUE_MAX] = "";
property_get("dalvik.vm.stack-trace-file", traces_path, "");
if (!traces_path[0]) return NULL;
@ -394,26 +414,25 @@ const char *dump_vm_traces() {
close(fd);
return NULL;
}
close(fd);
/* walk /proc and kill -QUIT all Dalvik processes */
DIR *proc = opendir("/proc");
if (proc == NULL) {
fprintf(stderr, "/proc: %s\n", strerror(errno));
return NULL;
goto error_close_fd;
}
/* use inotify to find when processes are done dumping */
int ifd = inotify_init();
if (ifd < 0) {
fprintf(stderr, "inotify_init: %s\n", strerror(errno));
return NULL;
goto error_close_fd;
}
int wfd = inotify_add_watch(ifd, traces_path, IN_CLOSE_WRITE);
if (wfd < 0) {
fprintf(stderr, "inotify_add_watch(%s): %s\n", traces_path, strerror(errno));
return NULL;
goto error_close_ifd;
}
struct dirent *d;
@ -422,39 +441,56 @@ const char *dump_vm_traces() {
int pid = atoi(d->d_name);
if (pid <= 0) continue;
/* identify Dalvik: /proc/(pid)/exe = /system/bin/app_process */
char path[PATH_MAX], data[PATH_MAX];
char path[PATH_MAX];
char data[PATH_MAX];
snprintf(path, sizeof(path), "/proc/%d/exe", pid);
size_t len = readlink(path, data, sizeof(data) - 1);
if (len <= 0 || memcmp(data, "/system/bin/app_process", 23)) continue;
/* skip zygote -- it won't dump its stack anyway */
snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
int fd = open(path, O_RDONLY);
len = read(fd, data, sizeof(data) - 1);
close(fd);
if (len <= 0 || !memcmp(data, "zygote", 6)) continue;
++dalvik_found;
if (kill(pid, SIGQUIT)) {
fprintf(stderr, "kill(%d, SIGQUIT): %s\n", pid, strerror(errno));
ssize_t len = readlink(path, data, sizeof(data) - 1);
if (len <= 0) {
continue;
}
data[len] = '\0';
/* wait for the writable-close notification from inotify */
struct pollfd pfd = { ifd, POLLIN, 0 };
int ret = poll(&pfd, 1, 200); /* 200 msec timeout */
if (ret < 0) {
fprintf(stderr, "poll: %s\n", strerror(errno));
} else if (ret == 0) {
fprintf(stderr, "warning: timed out dumping pid %d\n", pid);
} else {
struct inotify_event ie;
read(ifd, &ie, sizeof(ie));
if (!strcmp(data, "/system/bin/app_process")) {
/* skip zygote -- it won't dump its stack anyway */
snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
int fd = open(path, O_RDONLY);
len = read(fd, data, sizeof(data) - 1);
close(fd);
if (len <= 0) {
continue;
}
data[len] = '\0';
if (!strcmp(data, "zygote")) {
continue;
}
++dalvik_found;
if (kill(pid, SIGQUIT)) {
fprintf(stderr, "kill(%d, SIGQUIT): %s\n", pid, strerror(errno));
continue;
}
/* wait for the writable-close notification from inotify */
struct pollfd pfd = { ifd, POLLIN, 0 };
int ret = poll(&pfd, 1, 200); /* 200 msec timeout */
if (ret < 0) {
fprintf(stderr, "poll: %s\n", strerror(errno));
} else if (ret == 0) {
fprintf(stderr, "warning: timed out dumping pid %d\n", pid);
} else {
struct inotify_event ie;
read(ifd, &ie, sizeof(ie));
}
} else if (should_dump_native_traces(data)) {
/* dump native process if appropriate */
if (lseek(fd, 0, SEEK_END) < 0) {
fprintf(stderr, "lseek: %s\n", strerror(errno));
} else {
dump_backtrace_to_file(pid, fd);
}
}
}
close(ifd);
if (dalvik_found == 0) {
fprintf(stderr, "Warning: no Dalvik processes found to dump stacks\n");
}
@ -464,12 +500,18 @@ const char *dump_vm_traces() {
strlcat(dump_traces_path, ".bugreport", sizeof(dump_traces_path));
if (rename(traces_path, dump_traces_path)) {
fprintf(stderr, "rename(%s, %s): %s\n", traces_path, dump_traces_path, strerror(errno));
return NULL;
goto error_close_ifd;
}
result = dump_traces_path;
/* replace the saved [ANR] traces.txt file */
rename(anr_traces_path, traces_path);
return dump_traces_path;
error_close_ifd:
close(ifd);
error_close_fd:
close(fd);
return result;
}
void play_sound(const char* path) {