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put decode_pid in shared mem, so if player process dies, the master 

can still kill the decode process.

git-svn-id: https://svn.musicpd.org/mpd/trunk@107 09075e82-0dd4-0310-85a5-a0d7c8717e4f
This commit is contained in:
Warren Dukes 2004-02-27 22:25:06 +00:00
parent ad4246d6cb
commit 8b19235b61
4 changed files with 43 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
src/decode.c
View File

@ -49,31 +49,35 @@
#define FADE_CHUNKS 1024
int decode_pid = 0;
int * decode_pid = NULL;
void decodeSigHandler(int sig) {
if(sig==SIGCHLD) {
int status;
if(decode_pid==wait3(&status,WNOHANG,NULL)) {
if(decode_pid && *decode_pid==wait3(&status,WNOHANG,NULL)) {
if(WIFSIGNALED(status) && WTERMSIG(status)!=SIGTERM) {
ERROR("decode process died from a "
"non-TERM signal: %i\n",
WTERMSIG(status));
}
decode_pid = 0;
*decode_pid = 0;
}
}
else if(sig==SIGTERM) {
int pid = decode_pid;
if(pid>0) kill(pid,SIGTERM);
if(decode_pid) {
int pid = *decode_pid;
if(pid>0) kill(pid,SIGTERM);
}
exit(0);
}
}
void stopDecode(DecoderControl * dc) {
if(decode_pid>0 && (dc->start || dc->state==DECODE_STATE_DECODE)) {
if(decode_pid && *decode_pid>0 &&
(dc->start || dc->state==DECODE_STATE_DECODE))
{
dc->stop = 1;
while(decode_pid>0 && dc->stop) usleep(10);
while(decode_pid && *decode_pid>0 && dc->stop) usleep(10);
}
}
@ -106,7 +110,7 @@ int calculateCrossFadeChunks(PlayerControl * pc, AudioFormat * af) {
int waitOnDecode(PlayerControl * pc, AudioFormat * af, DecoderControl * dc,
Buffer * cb)
{
while(decode_pid>0 && dc->start) usleep(10);
while(decode_pid && *decode_pid>0 && dc->start) usleep(10);
if(dc->start || dc->error!=DECODE_ERROR_NOERROR) {
strncpy(pc->erroredFile,pc->file,MAXPATHLEN);
@ -135,7 +139,7 @@ int waitOnDecode(PlayerControl * pc, AudioFormat * af, DecoderControl * dc,
void decodeSeek(PlayerControl * pc, AudioFormat * af, DecoderControl * dc,
Buffer * cb)
{
if(decode_pid>0) {
if(decode_pid && *decode_pid>0) {
cb->next = -1;
if(dc->state!=DECODE_STATE_DECODE || dc->error ||
strcmp(dc->file,pc->file)!=0)
@ -147,7 +151,7 @@ void decodeSeek(PlayerControl * pc, AudioFormat * af, DecoderControl * dc,
dc->error = 0;
waitOnDecode(pc,af,dc,cb);
}
if(decode_pid>0 && dc->state==DECODE_STATE_DECODE) {
if(*decode_pid>0 && dc->state==DECODE_STATE_DECODE) {
dc->seekWhere = pc->seekWhere > pc->totalTime-1 ?
pc->totalTime-1 : pc->seekWhere;
dc->seekWhere = 1 > dc->seekWhere ? 1 : dc->seekWhere;
@ -155,7 +159,7 @@ void decodeSeek(PlayerControl * pc, AudioFormat * af, DecoderControl * dc,
dc->seek = 1;
pc->elapsedTime = dc->seekWhere;
pc->bitRate = 0;
while(decode_pid>0 && dc->seek) usleep(10);
while(*decode_pid>0 && dc->seek) usleep(10);
}
}
pc->seek = 0;
@ -193,9 +197,10 @@ void decodeSeek(PlayerControl * pc, AudioFormat * af, DecoderControl * dc,
int decoderInit(PlayerControl * pc, Buffer * cb, AudioFormat *af,
DecoderControl * dc) {
decode_pid = fork();
decode_pid = &(pc->decode_pid);
*decode_pid = fork();
if(decode_pid==0) {
if(*decode_pid==0) {
/* CHILD */
while(1) {
@ -242,7 +247,7 @@ int decoderInit(PlayerControl * pc, Buffer * cb, AudioFormat *af,
exit(0);
/* END OF CHILD */
}
else if(decode_pid<0) {
else if(*decode_pid<0) {
strncpy(pc->erroredFile,pc->file,MAXPATHLEN);
pc->error = PLAYER_ERROR_SYSTEM;
return -1;
@ -274,7 +279,7 @@ void decode() {
dc->start = 1;
cb->next = -1;
if(decode_pid<=0) {
if(decode_pid==NULL || *decode_pid<=0) {
if(decoderInit(pc,cb,af,dc)<0) return;
}
@ -299,7 +304,7 @@ void decode() {
pc->beginTime = pc->elapsedTime;
kill(getppid(),SIGUSR1);
while(decode_pid>0 && !cb->wrap && cb->end-cb->begin<bbp &&
while(*decode_pid>0 && !cb->wrap && cb->end-cb->begin<bbp &&
dc->state==DECODE_STATE_DECODE)
{
processDecodeInput();
@ -443,7 +448,7 @@ void decode() {
}
pc->beginTime = cb->times[cb->begin];
}
else if(decode_pid<=0 ||
else if(*decode_pid<=0 ||
(dc->state==DECODE_STATE_STOP && !dc->start))
{
quit = 1;

20
src/player.c
View File

@ -48,6 +48,8 @@ int player_pid = 0;
int player_termSent = 0;
void resetPlayer() {
int pid;
player_pid = 0;
player_termSent = 0;
getPlayerData()->playerControl.stop = 0;
@ -58,12 +60,17 @@ void resetPlayer() {
getPlayerData()->playerControl.state = PLAYER_STATE_STOP;
getPlayerData()->playerControl.queueState = PLAYER_QUEUE_UNLOCKED;
getPlayerData()->playerControl.seek = 0;
/* kill decode process if it got left running */
pid = getPlayerData()->playerControl.decode_pid;
if(pid>0) kill(pid,SIGTERM);
getPlayerData()->playerControl.decode_pid = 0;
}
void player_sigHandler(int signal) {
if(signal==SIGCHLD) {
int status;
if(player_pid==wait3(&status,WNOHANG,NULL)) {
int pid = wait3(&status,WNOHANG,NULL);
if(player_pid==pid) {
if(WIFSIGNALED(status) && WTERMSIG(status)!=SIGTERM) {
ERROR("player process died from a "
"non-TERM signal: %i\n",
@ -71,6 +78,17 @@ void player_sigHandler(int signal) {
}
resetPlayer();
}
else if(pid==getPlayerData()->playerControl.decode_pid &&
player_pid<=0)
{
if(WIFSIGNALED(status) && WTERMSIG(status)!=SIGTERM) {
ERROR("(caught by master parent) "
"decode process died from a "
"non-TERM signal: %i\n",
WTERMSIG(status));
}
getPlayerData()->playerControl.decode_pid = 0;
}
}
}

1
src/player.h
View File

@ -74,6 +74,7 @@ typedef struct _PlayerControl {
float crossFade;
mpd_sint8 softwareVolume;
double totalPlayTime;
int decode_pid;
} PlayerControl;
void player_sigHandler(int signal);

1
src/playerData.c
View File

@ -107,6 +107,7 @@ void initPlayerData() {
playerData_pd->playerControl.crossFade = crossfade;
playerData_pd->playerControl.softwareVolume = 100;
playerData_pd->playerControl.totalPlayTime = 0;
playerData_pd->playerControl.decode_pid = 0;
playerData_pd->decoderControl.stop = 0;
playerData_pd->decoderControl.start = 0;