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boinc/api/boinc_api.C

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// The contents of this file are subject to the Mozilla Public License
// Version 1.0 (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.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
// License for the specific language governing rights and limitations
// under the License.
//
// The Original Code is the Berkeley Open Infrastructure for Network Computing.
//
// The Initial Developer of the Original Code is the SETI@home project.
// Portions created by the SETI@home project are Copyright (C) 2002
// University of California at Berkeley. All Rights Reserved.
//
// Contributor(s):
//
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#ifdef WIN32
#include <io.h>
#include <sys/stat.h>
#include <windows.h>
#include <winuser.h>
#endif
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <signal.h>
#include <fcntl.h>
#include <sys/types.h>
#include "parse.h"
#include "error_numbers.h"
#include "file_names.h"
#include "boinc_api.h"
static APP_INIT_DATA aid;
static double timer_period = 0.1;
static double time_until_checkpoint;
static double time_until_fraction_done_update;
static double fraction_done;
static bool ready_to_checkpoint = false;
static bool this_process_active;
// read the INIT_DATA and FD_INIT files
//
int boinc_init() {
FILE* f;
int retval;
#ifdef _WIN32
freopen(STDERR_FILE, "a", stderr);
fprintf(stderr, "in boinc_init()\n");
#endif
f = fopen(INIT_DATA_FILE, "r");
if (!f) {
fprintf(stderr, "boinc_init(): can't open init data file\n");
return ERR_FOPEN;
}
retval = parse_init_data_file(f, aid);
if (retval) {
fprintf(stderr, "boinc_init(): can't parse init data file\n");
return retval;
}
fclose(f);
f = fopen(FD_INIT_FILE, "r");
if (f) {
parse_fd_init_file(f);
fclose(f);
}
time_until_checkpoint = aid.checkpoint_period;
time_until_fraction_done_update = aid.fraction_done_update_period;
this_process_active = true;
set_timer(timer_period);
return 0;
}
int boinc_finish(int status) {
write_checkpoint_cpu_file(boinc_cpu_time());
exit(status);
return 0;
}
int boinc_get_init_data(APP_INIT_DATA& app_init_data) {
app_init_data = aid;
return 0;
}
// resolve XML soft links
//
int boinc_resolve_filename(char *virtual_name, char *physical_name) {
FILE *fp;
char buf[512];
strcpy(physical_name, virtual_name);
// Open the file and load the first line
fp = fopen(virtual_name, "r");
if (!fp) return 0;
fgets(buf, 512, fp);
fclose(fp);
// If it's the <soft_link> XML tag, return its value,
// otherwise, return the original file name
//
parse_str( buf, "<soft_link>", physical_name);
return 0;
}
bool boinc_time_to_checkpoint() {
return ready_to_checkpoint;
}
int boinc_checkpoint_completed() {
write_checkpoint_cpu_file(boinc_cpu_time());
ready_to_checkpoint = false;
time_until_checkpoint = aid.checkpoint_period;
return 0;
}
int boinc_fraction_done(double x) {
fraction_done = x;
return 0;
}
int boinc_child_start() {
this_process_active = false;
return 0;
}
int boinc_child_done(double cpu) {
this_process_active = true;
return 0;
}
double boinc_cpu_time() {
#ifdef HAVE_SYS_RESOURCE_H
int retval, pid = getpid();
struct rusage ru;
retval = getrusage(RUSAGE_SELF, &ru);
if(retval) fprintf(stderr, "error: could not get cpu time for %d\n", pid);
return (double)ru.ru_utime.tv_sec + (
((double)ru.ru_utime.tv_usec) / ((double)1000000.0)
);
#else
#ifdef _WIN32
#ifdef WINNT_CLOCK
HANDLE hProcess;
FILETIME creationTime,exitTime,kernelTime,userTime;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, 0, GetCurrentProcessId());
if (GetProcessTimes(
hProcess, &creationTime, &exitTime, &kernelTime, &userTime)
){
ULARGE_INTEGER tKernel, tUser;
LONGLONG totTime;
CloseHandle(hProcess);
tKernel.LowPart = kernelTime.dwLowDateTime;
tKernel.HighPart = kernelTime.dwHighDateTime;
tUser.LowPart = userTime.dwLowDateTime;
tUser.HighPart = userTime.dwHighDateTime;
// Runtimes in 100-nanosecond units
totTime = tKernel.QuadPart + tUser.QuadPart;
// Convert to seconds and return
return(totTime / 10000000.0);
}
CloseHandle(hProcess);
// ... fall through
#endif // WINNT_CLOCK
static bool first=true;
static DWORD last_count = 0;
if (first) {
last_count = GetTickCount();
first = true;
}
DWORD cur = GetTickCount();
double x = (cur - last_count)/1000.;
last_count = cur;
return x;
#endif // _WIN32
#endif
#ifdef macintosh
return (double) GetCPUTime() / CLOCKS_PER_SEC;
#endif
fprintf(stderr, "boinc_cpu_time(): not implemented\n");
}
#ifdef _WIN32
void CALLBACK on_timer( HWND hwnd, UINT uMsg, UINT idEvent, DWORD dwTime ) {
#else
void on_timer(int a) {
#endif
if (!ready_to_checkpoint) {
time_until_checkpoint -= timer_period;
if (time_until_checkpoint <= 0) {
ready_to_checkpoint = true;
}
}
if (this_process_active) {
time_until_fraction_done_update -= timer_period;
if (time_until_fraction_done_update < 0) {
FILE* f = fopen(FRACTION_DONE_FILE, "w");
write_fraction_done_file(f, boinc_cpu_time(), fraction_done);
fclose(f);
time_until_fraction_done_update = aid.fraction_done_update_period;
}
}
}
int set_timer(double period) {
int retval=0;
#ifdef _WIN32
retval = SetTimer( NULL, 0, (int)(period*1000), on_timer );
#endif
#if HAVE_SIGNAL_H
#if HAVE_SYS_TIME_H
struct sigaction sa;
sa.sa_handler = on_timer;
sa.sa_flags = 0;
sigaction(SIGVTALRM, &sa, NULL);
itimerval value;
value.it_value.tv_sec = (int)period;
value.it_value.tv_usec = ((int)(period*1000000))%1000000;
value.it_interval = value.it_value;
retval = setitimer(ITIMER_VIRTUAL, &value, NULL);
#endif
#endif
return retval;
}
int write_init_data_file(FILE* f, APP_INIT_DATA& ai) {
if (strlen(ai.app_preferences)) {
fprintf(f, "<app_preferences>\n%s</app_preferences>\n", ai.app_preferences);
}
if (strlen(ai.team_name)) {
fprintf(f, "<team_name>\n%s</team_name>\n", ai.team_name);
}
if (strlen(ai.user_name)) {
fprintf(f, "<user_name>\n%s</user_name>\n", ai.user_name);
}
fprintf(f,
"<wu_cpu_time>%f</wu_cpu_time>\n"
"<total_cobblestones>%f</total_cobblestones>\n"
"<recent_avg_cobblestones>%f</recent_avg_cobblestones>\n"
"<checkpoint_period>%f</checkpoint_period>\n"
"<fraction_done_update_period>%f</fraction_done_update_period>\n",
ai.wu_cpu_time,
ai.total_cobblestones,
ai.recent_avg_cobblestones,
ai.checkpoint_period,
ai.fraction_done_update_period
);
return 0;
}
int parse_init_data_file(FILE* f, APP_INIT_DATA& ai) {
char buf[256];
memset(&ai, 0, sizeof(ai));
while (fgets(buf, 256, f)) {
if (match_tag(buf, "<app_preferences>")) {
strcpy(ai.app_preferences, "");
while (fgets(buf, 256, f)) {
if (match_tag(buf, "</app_specific_prefs>")) break;
strcat(ai.app_preferences, buf);
}
continue;
}
else if (parse_str(buf, "<user_name>", ai.user_name)) continue;
else if (parse_str(buf, "<team_name>", ai.team_name)) continue;
else if (parse_double(buf, "<total_cobblestones>", ai.total_cobblestones)) continue;
else if (parse_double(buf, "<recent_avg_cobblestones>", ai.recent_avg_cobblestones)) continue;
else if (parse_double(buf, "<wu_cpu_time>", ai.wu_cpu_time)) continue;
else if (parse_double(buf, "<checkpoint_period>", ai.checkpoint_period)) continue;
else if (parse_double(buf, "<fraction_done_update_period>", ai.fraction_done_update_period)) continue;
else fprintf(stderr, "parse_init_data_file: unrecognized %s", buf);
}
return 0;
}
int write_checkpoint_cpu_file(double cpu) {
FILE *f = fopen(CHECKPOINT_CPU_FILE, "w");
if (!f) return ERR_FOPEN;
fprintf(f, "<checkpoint_cpu_time>%f</checkpoint_cpu_time>\n", cpu);
fclose(f);
return 0;
}
int parse_checkpoint_cpu_file(FILE* f, double& checkpoint_cpu) {
char buf[256];
while (fgets(buf, 256, f)) {
if (parse_double(buf, "<checkpoint_cpu_time>", checkpoint_cpu)) continue;
}
return 0;
}
int write_fraction_done_file(FILE* f, double pct, double cpu) {
fprintf(f,
"<fraction_done>%f</fraction_done>\n"
"<cpu_time>%f</cpu_time>\n",
pct,
cpu
);
return 0;
}
int parse_fraction_done_file(FILE* f, double& pct, double& cpu) {
char buf[256];
while (fgets(buf, 256, f)) {
if (parse_double(buf, "<fraction_done>", pct)) continue;
else if (parse_double(buf, "<cpu_time>", cpu)) continue;
else fprintf(stderr, "parse_fraction_done_file: unrecognized %s", buf);
}
return 0;
}
// TODO: this should handle arbitrarily many fd/filename pairs.
// Also, give the tags better names
int write_fd_init_file(FILE* f, char *file_name, int fdesc, int input_file ) {
if (input_file) {
fprintf(f, "<fdesc_dup_infile>%s</fdesc_dup_infile>\n", file_name);
fprintf(f, "<fdesc_dup_innum>%d</fdesc_dup_innum>\n", fdesc);
} else {
fprintf(f, "<fdesc_dup_outfile>%s</fdesc_dup_outfile>\n", file_name);
fprintf(f, "<fdesc_dup_outnum>%d</fdesc_dup_outnum>\n", fdesc);
}
return 0;
}
// TODO: this should handle arbitrarily many fd/filename pairs.
// Also, this shouldn't be doing the actual duping!
//
int parse_fd_init_file(FILE* f) {
char buf[256],filename[256];
int filedesc;
while (fgets(buf, 256, f)) {
if (parse_str(buf, "<fdesc_dup_infile>", filename)) {
if (fgets(buf, 256, f)) {
if (parse_int(buf, "<fdesc_dup_innum>", filedesc)) {
freopen(filename, "r", stdin);
fprintf(stderr, "opened input file %s\n", filename);
}
}
} else if (parse_str(buf, "<fdesc_dup_outfile>", filename)) {
if (fgets(buf, 256, f)) {
if (parse_int(buf, "<fdesc_dup_outnum>", filedesc)) {
freopen(filename, "w", stdout);
fprintf(stderr, "opened output file %s\n", filename);
}
}
} else fprintf(stderr, "parse_fd_init_file: unrecognized %s", buf);
}
return 0;
}
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