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authorQball Cow <qball@qballcow.nl>2005-11-18 12:09:05 +0000
committerQball Cow <qball@qballcow.nl>2005-11-18 12:09:05 +0000
commit4b00c62587dbe0ce131992dcd574ffe323cffa5c (patch)
tree231924d4c2fb4eb916c3a02ed1fc505e42081e58 /src
parent32e5f4ca2b43c310ff6639320dec2dd52f159f50 (diff)
downloadmpd-4b00c62587dbe0ce131992dcd574ffe323cffa5c.tar.gz
mpd-4b00c62587dbe0ce131992dcd574ffe323cffa5c.tar.xz
mpd-4b00c62587dbe0ce131992dcd574ffe323cffa5c.zip
DJWLindenaar's fix race condition and some memory leaks patch
git-svn-id: https://svn.musicpd.org/mpd/trunk@3681 09075e82-0dd4-0310-85a5-a0d7c8717e4f
Diffstat (limited to '')
-rw-r--r--src/command.h1
-rw-r--r--src/conf.c5
-rw-r--r--src/conf.h1
-rw-r--r--src/main.c24
-rw-r--r--src/myfprintf.c7
-rw-r--r--src/myfprintf.h1
-rw-r--r--src/sig_handlers.c13
7 files changed, 44 insertions, 8 deletions
diff --git a/src/command.h b/src/command.h
index cf8874a17..edf42aa81 100644
--- a/src/command.h
+++ b/src/command.h
@@ -30,6 +30,7 @@
#define COMMAND_RETURN_KILL 10
#define COMMAND_RETURN_CLOSE 20
+#define COMMAND_MASTER_READY 30
extern char * current_command;
extern int command_listNum;
diff --git a/src/conf.c b/src/conf.c
index 9675e97d3..53c2370f3 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -112,6 +112,10 @@ void registerConfigParam(char * name, int repeatable, int block) {
insertInList(configEntriesList, name, entry);
}
+void finishConf() {
+ freeList(configEntriesList);
+}
+
void initConf() {
configEntriesList = makeList((ListFreeDataFunc *)freeConfigEntry, 1);
@@ -295,6 +299,7 @@ void readConf(char * file) {
freeArgArray(array, numberOfArgs);
}
+ fclose(fp);
}
ConfigParam * getNextConfigParam(char * name, ConfigParam * last) {
diff --git a/src/conf.h b/src/conf.h
index 375752b53..ce48e640f 100644
--- a/src/conf.h
+++ b/src/conf.h
@@ -73,6 +73,7 @@ typedef struct _ConfigParam {
} ConfigParam;
void initConf();
+void finishConf();
void readConf(char * file);
diff --git a/src/main.c b/src/main.c
index 4c6ef9c26..1866ecfe0 100644
--- a/src/main.c
+++ b/src/main.c
@@ -42,6 +42,7 @@
#include <stdio.h>
#include <sys/select.h>
#include <sys/types.h>
+#include <sys/wait.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <string.h>
@@ -306,6 +307,7 @@ void startMainProcess() {
mainPid = pid;
masterInitSigHandlers();
+ kill(mainPid, SIGUSR1);
while (masterHandlePendingSignals()!=COMMAND_RETURN_KILL)
waitOnSignals();
/* we're killed */
@@ -320,6 +322,9 @@ void startMainProcess() {
finishPaths();
kill(mainPid, SIGTERM);
+ waitpid(mainPid,NULL,0);
+ finishConf();
+ myfprintfCloseLogFile();
exit(EXIT_SUCCESS);
} else if(pid<0) {
@@ -483,8 +488,8 @@ void killFromPidFile(char * cmd, int killOption) {
}
int main(int argc, char * argv[]) {
- FILE * out;
- FILE * err;
+ FILE * out = NULL;
+ FILE * err = NULL;
Options options;
closeAllFDs();
@@ -519,8 +524,7 @@ int main(int argc, char * argv[]) {
/* This is the main process which has
* been forked from the master process.
*/
-
-
+ initSigHandlers();
initPermissions();
@@ -539,8 +543,12 @@ int main(int argc, char * argv[]) {
setupLogOutput(&options, out, err);
- openVolumeDevice();
- initSigHandlers();
+ /* wait for the master process to get ready so we can start
+ * playing if readPlaylistState thinks we should*/
+ while (COMMAND_MASTER_READY != handlePendingSignals())
+ my_usleep(1);
+
+ openVolumeDevice();
readPlaylistState();
@@ -567,6 +575,8 @@ int main(int argc, char * argv[]) {
finishCommands();
finishInputPlugins();
cleanUpPidFile();
-
+ finishConf();
+
+ myfprintfCloseLogFile();
return EXIT_SUCCESS;
}
diff --git a/src/myfprintf.c b/src/myfprintf.c
index a959b6609..c333e9c7f 100644
--- a/src/myfprintf.c
+++ b/src/myfprintf.c
@@ -122,3 +122,10 @@ int myfprintfCloseAndOpenLogFile() {
return 0;
}
+
+void myfprintfCloseLogFile() {
+ if(myfprintf_stdLogMode) {
+ while(fclose(myfprintf_out)<0 && errno==EINTR);
+ while(fclose(myfprintf_err)<0 && errno==EINTR);
+ }
+}
diff --git a/src/myfprintf.h b/src/myfprintf.h
index 4ffe9725a..45eaf9289 100644
--- a/src/myfprintf.h
+++ b/src/myfprintf.h
@@ -29,4 +29,5 @@ void myfprintf(FILE * fp, char * format, ... );
int myfprintfCloseAndOpenLogFile();
+void myfprintfCloseLogFile();
#endif
diff --git a/src/sig_handlers.c b/src/sig_handlers.c
index 364636e7c..567a39133 100644
--- a/src/sig_handlers.c
+++ b/src/sig_handlers.c
@@ -56,7 +56,17 @@ int masterHandlePendingSignals() {
}
int handlePendingSignals() {
- if(signal_is_pending(SIGINT) || signal_is_pending(SIGTERM)) {
+ /* this SIGUSR1 signal comes before the KILL signals, because there if the process is
+ * looping, waiting for this signal, it will not respond to the KILL signal. This might be
+ * better implemented by using bit-wise defines and or'ing of the COMMAND_FOO as return.
+ */
+ if (signal_is_pending(SIGUSR1)) {
+ signal_clear(SIGUSR1);
+ DEBUG("The master process is ready to receive signals\n");
+ return COMMAND_MASTER_READY;
+ }
+
+ if(signal_is_pending(SIGINT) || signal_is_pending(SIGTERM)) {
DEBUG("main process got SIGINT or SIGTERM, exiting\n");
return COMMAND_RETURN_KILL;
}
@@ -135,6 +145,7 @@ void initSigHandlers() {
while(sigaction(SIGPIPE,&sa,NULL)<0 && errno==EINTR);
sa.sa_handler = chldSigHandler;
while(sigaction(SIGCHLD,&sa,NULL)<0 && errno==EINTR);
+ signal_handle(SIGUSR2);
signal_handle(SIGUSR1);
signal_handle(SIGINT);
signal_handle(SIGTERM);