diff options
Diffstat (limited to 'init/bootchart.c')
| -rw-r--r-- | init/bootchart.c | 73 |
1 files changed, 57 insertions, 16 deletions
diff --git a/init/bootchart.c b/init/bootchart.c index 2afe98b6b..f72fcaaca 100644 --- a/init/bootchart.c +++ b/init/bootchart.c @@ -1,3 +1,19 @@ +/* + * Copyright (C) 2008 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. + */ + /* this code is used to generate a boot sequence profile that can be used * with the 'bootchart' graphics generation tool. see www.bootchart.org * note that unlike the original bootchartd, this is not a Bash script but @@ -16,17 +32,18 @@ #include <errno.h> #include <stdlib.h> #include <sys/stat.h> +#include "bootchart.h" #define VERSION "0.8" #define SAMPLE_PERIOD 0.2 -#define LOG_ROOT "/tmp/bootchart" +#define LOG_ROOT "/data/bootchart" #define LOG_STAT LOG_ROOT"/proc_stat.log" #define LOG_PROCS LOG_ROOT"/proc_ps.log" #define LOG_DISK LOG_ROOT"/proc_diskstats.log" #define LOG_HEADER LOG_ROOT"/header" #define LOG_ACCT LOG_ROOT"/kernel_pacct" -#define LOG_STARTFILE "/data/bootchart" +#define LOG_STARTFILE "/data/bootchart-start" #define LOG_STOPFILE "/data/bootchart-stop" static int @@ -54,12 +71,11 @@ proc_read(const char* filename, char* buff, size_t buffsize) len = unix_read(fd, buff, buffsize-1); close(fd); } - buff[len] = 0; + buff[len > 0 ? len : 0] = 0; return len; } #define FILE_BUFF_SIZE 65536 -#define FILE_BUFF_RESERVE (FILE_BUFF_SIZE - 4096) typedef struct { int count; @@ -81,7 +97,7 @@ file_buff_write( FileBuff buff, const void* src, int len ) int avail = sizeof(buff->data) - buff->count; if (avail > len) avail = len; - + memcpy( buff->data + buff->count, src, avail ); len -= avail; src = (char*)src + avail; @@ -115,7 +131,7 @@ log_header(void) time_t now_t = time(NULL); struct tm now = *localtime(&now_t); strftime(date, sizeof(date), "%x %X", &now); - + out = fopen( LOG_HEADER, "w" ); if (out == NULL) return; @@ -123,7 +139,7 @@ log_header(void) proc_read("/proc/cmdline", cmdline, sizeof(cmdline)); proc_read("/proc/version", uname, sizeof(uname)); proc_read("/proc/cpuinfo", cpuinfo, sizeof(cpuinfo)); - + cpu = strchr( cpuinfo, ':' ); if (cpu) { char* p = strchr(cpu, '\n'); @@ -131,7 +147,7 @@ log_header(void) if (p) *p = 0; } - + fprintf(out, "version = %s\n", VERSION); fprintf(out, "title = Boot chart for Android ( %s )\n", date); fprintf(out, "system.uname = %s\n", uname); @@ -174,7 +190,6 @@ do_log_uptime(FileBuff log) fd = open("/proc/uptime",O_RDONLY); if (fd >= 0) { int ret; - close_on_exec(fd); ret = unix_read(fd, buff, 64); close(fd); buff[64] = 0; @@ -212,7 +227,7 @@ do_log_file(FileBuff log, const char* procfile) ret = unix_read(fd, buff, sizeof(buff)); if (ret <= 0) break; - + file_buff_write(log, buff, ret); if (ret < (int)sizeof(buff)) break; @@ -230,7 +245,7 @@ do_log_procs(FileBuff log) struct dirent* entry; do_log_uptime(log); - + while ((entry = readdir(dir)) != NULL) { /* only match numeric values */ char* end; @@ -241,7 +256,7 @@ do_log_procs(FileBuff log) char cmdline[1024]; int len; int fd; - + /* read command line and extract program name */ snprintf(filename,sizeof(filename),"/proc/%d/cmdline",pid); proc_read(filename, cmdline, sizeof(cmdline)); @@ -285,11 +300,36 @@ int bootchart_init( void ) { int ret; char buff[4]; - + int timeout = 0, count = 0; + buff[0] = 0; proc_read( LOG_STARTFILE, buff, sizeof(buff) ); - if (buff[0] != '1') - return -1; + if (buff[0] != 0) { + timeout = atoi(buff); + } + else { + /* when running with emulator, androidboot.bootchart=<timeout> + * might be passed by as kernel parameters to specify the bootchart + * timeout. this is useful when using -wipe-data since the /data + * partition is fresh + */ + char cmdline[1024]; + char* s; +#define KERNEL_OPTION "androidboot.bootchart=" + proc_read( "/proc/cmdline", cmdline, sizeof(cmdline) ); + s = strstr(cmdline, KERNEL_OPTION); + if (s) { + s += sizeof(KERNEL_OPTION)-1; + timeout = atoi(s); + } + } + if (timeout == 0) + return 0; + + if (timeout > BOOTCHART_MAX_TIME_SEC) + timeout = BOOTCHART_MAX_TIME_SEC; + + count = (timeout*1000 + BOOTCHART_POLLING_MS-1)/BOOTCHART_POLLING_MS; do {ret=mkdir(LOG_ROOT,0755);}while (ret < 0 && errno == EINTR); @@ -307,7 +347,7 @@ int bootchart_init( void ) } log_header(); - return 0; + return count; } /* called each time you want to perform a bootchart sampling op */ @@ -324,6 +364,7 @@ int bootchart_step( void ) return -1; } } + return 0; } |