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Fix some memory leaks.

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This commit is contained in:
Alain Magloire 2002-10-17 19:18:20 +00:00
parent cbcaf432bb
commit 367ffc2972
1 changed files with 116 additions and 111 deletions
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227
core/org.eclipse.cdt.core.qnx/library/spawner.c
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@ -17,115 +17,122 @@ typedef JNIEXPORT char * (JNICALL * JVM_NativePath)(const char *);
void ThrowByName(JNIEnv *env, const char *name, const char *msg); void ThrowByName(JNIEnv *env, const char *name, const char *msg);
void * GetJVMProc(char * vmlib, char * procName); void * GetJVMProc(char * vmlib, char * procName);
static void * hVM = NULL; /* Java Virtual Machine handler. */
static void * hVM = NULL; // Java Virtual Machine handler
JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_Spawner_exec0 JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_Spawner_exec0
(JNIEnv * env, jobject proc, jobjectArray cmdArray, jobjectArray envp, jstring dir, jintArray channels) (JNIEnv * env, jobject proc, jobjectArray cmdArray, jobjectArray envp, jstring dir, jintArray channels)
{ {
int fd_map[3]; // File descriptors int fd_map[3]; /* File descriptors. */
int fd_ret[3]; // File descriptors that we return to Java int fd_ret[3]; /* File descriptors that we return to Java. */
int fd[2]; // Pipe open structure int fd[2]; /* Pipe open structure. */
int i; int i;
int nParms = 0;// Number of parameters int nParms = 0;/* Number of parameters. */
int nEnvs = 0;// Number of environment variables int nEnvs = 0;/* Number of environment variables. */
char ** pParms = NULL; // Parameters char ** pParms = NULL; /* Parameters. */
char ** pEnvs = NULL; // Environment variables char ** pEnvs = NULL; /* Environment variables. */
char * pCommand = NULL; // Command to execute char * pCommand = NULL; /* Command to execute. */
char * pwd = 0; // Process working directory char cwd[PATH_MAX + 1]; /* Current working directory. */
char cwd[PATH_MAX + 1]; // Current working directory pid_t pid; /* Process ID. */
pid_t pid; // Process ID struct inheritance inherit;
struct inheritance inherit;
if ((cmdArray == NULL) || ((nParms = (*env)->GetArrayLength(env, cmdArray)) == 0))
ThrowByName(env, "java/lang/IOException", "No command line specified");
if ((cmdArray == 0) || ((nParms = (*env) -> GetArrayLength(env, cmdArray)) == 0))
ThrowByName(env, "java/lang/NullPointerException", "No command line specified");
for(i = 0; i < 3; ++i)
{
if(EOK != pipe(fd))
ThrowByName(env, "java/io/IOException", "Cannot create pipe for spawner");
if(0 ==i)
{
fd_map[i] = fd[0];
fd_ret[i] = fd[1];
}
else
{
fd_map[i] = fd[1];
fd_ret[i] = fd[0];
}
}
if(nParms > 0)
{
pParms = malloc(sizeof(char *) * (nParms + 1));
for(i = 0; i < nParms; ++i)
{
jobject item = (*env) -> GetObjectArrayElement(env, cmdArray, i);
const char * str = (*env) -> GetStringUTFChars(env, item, 0);
if(i == 0)
pCommand = strdup(str);
pParms[i] = strdup(str);
(*env) -> ReleaseStringUTFChars(env, item, str);
}
pParms[i] = NULL;
}
nEnvs = (*env) -> GetArrayLength(env, envp);
if(nEnvs > 0)
{
pEnvs = malloc(sizeof(char *) * (nEnvs + 1));
for(i = 0; i < nEnvs; ++i)
{
jobject item = (*env) -> GetObjectArrayElement(env, envp, i);
const char * str = (*env) -> GetStringUTFChars(env, item, 0);
pEnvs[i] = strdup(str);
(*env) -> ReleaseStringUTFChars(env, item, str);
}
pEnvs[i] = NULL;
}
if (dir != 0) for (i = 0; i < 3; ++i) {
{ if (EOK != pipe(fd))
char * item; ThrowByName(env, "java/io/IOException", "Cannot create pipe for spawner");
pwd = strdup(item = (char *)(*env) -> GetStringUTFChars(env, dir, 0)); if (0 == i) {
getcwd(cwd, sizeof(cwd)); fd_map[i] = fd[0];
chdir(pwd); fd_ret[i] = fd[1];
(*env) -> ReleaseStringUTFChars(env, dir, item); } else {
} fd_map[i] = fd[1];
fd_ret[i] = fd[0];
// Nothing for now }
memset(&inherit, 0, sizeof(inherit)); }
inherit.flags = SPAWN_SETGROUP;
inherit.pgroup = SPAWN_NEWPGROUP;
pid = spawnp(pCommand, 3, fd_map, &inherit, pParms, pEnvs);
if(dir != 0) // Restore working directory if (nParms > 0) {
chdir(cwd); pParms = malloc(sizeof(char *) * (nParms + 1));
for (i = 0; i < nParms; ++i) {
for(i = 0; i < 3; ++i) jobject item = (*env)->GetObjectArrayElement(env, cmdArray, i);
{ const char *str = (*env)->GetStringUTFChars(env, item, 0);
close(fd_map[i]); if (i == 0)
} pCommand = strdup(str);
pParms[i] = strdup(str);
if(-1 == pid) // Failed - close pipes (*env)->ReleaseStringUTFChars(env, item, str);
{ }
for(i = 0; i < 3; ++i) pParms[i] = NULL;
{ }
close(fd_ret[i]);
} nEnvs = (*env) -> GetArrayLength(env, envp);
} if (nEnvs > 0) {
else // Success - return pipes to Java pEnvs = malloc(sizeof(char *) * (nEnvs + 1));
{ for (i = 0; i < nEnvs; ++i) {
(*env) -> SetIntArrayRegion(env, channels, 0, 3, fd_ret); jobject item = (*env)->GetObjectArrayElement(env, envp, i);
} const char *str = (*env)->GetStringUTFChars(env, item, 0);
pEnvs[i] = strdup(str);
return pid; (*env)->ReleaseStringUTFChars(env, item, str);
}
pEnvs[i] = NULL;
}
if (dir != 0) {
char *item = (char *)(*env)->GetStringUTFChars(env, dir, 0);
getcwd(cwd, sizeof(cwd));
chdir(item);
(*env)->ReleaseStringUTFChars(env, dir, item);
}
/* Nothing for now. */
memset(&inherit, 0, sizeof(inherit));
inherit.flags = SPAWN_SETGROUP;
inherit.pgroup = SPAWN_NEWPGROUP;
pid = spawnp(pCommand, 3, fd_map, &inherit, pParms, pEnvs);
if (dir != 0) /* Restore working directory. */
chdir(cwd);
for (i = 0; i < 3; ++i) {
close(fd_map[i]);
}
if (-1 == pid) { /* Failed - close pipes. */
for (i = 0; i < 3; ++i) {
close(fd_ret[i]);
}
} else { /* Success - return pipes to Java. */
(*env) -> SetIntArrayRegion(env, channels, 0, 3, fd_ret);
}
/* Free Parameters. */
if (pParms != NULL) {
int j;
for (j = 0; pParms[j] != NULL; j++) {
if (pParms[j] != NULL) {
free(pParms[j]);
}
}
free(pParms);
}
/* Free Environment variables. */
if (pEnvs != NULL) {
int j;
for (j = 0; pEnvs[j] != NULL; j++) {
if (pEnvs[j] != NULL) {
free(pEnvs[j]);
}
}
free(pEnvs);
}
/* Free Command to execute. */
if (pCommand != NULL) {
free(pCommand);
}
return pid;
} }
JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_Spawner_exec1 JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_Spawner_exec1
@ -142,11 +149,9 @@ JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_Spawner_exec1
pid_t pid; // Process ID pid_t pid; // Process ID
struct inheritance inherit; struct inheritance inherit;
if ((cmdArray == 0) || ((nParms = (*env) -> GetArrayLength(env, cmdArray)) == 0)) if ((cmdArray == 0) || ((nParms = (*env) -> GetArrayLength(env, cmdArray)) == 0))
ThrowByName(env, "java/lang/NullPointerException", "No command line specified"); ThrowByName(env, "java/lang/NullPointerException", "No command line specified");
if(nParms > 0) if(nParms > 0)
{ {
pParms = malloc(sizeof(char *) * (nParms + 1)); pParms = malloc(sizeof(char *) * (nParms + 1));
@ -208,7 +213,7 @@ JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_Spawner_exec1
JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_Spawner_raise JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_Spawner_raise
(JNIEnv * env, jobject proc, jint pid, jint sig) (JNIEnv * env, jobject proc, jint pid, jint sig)
{ {
return kill(pid, sig); return kill(pid, sig);
} }
/* /*
@ -219,8 +224,8 @@ JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_Spawner_raise
JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_Spawner_waitFor JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_Spawner_waitFor
(JNIEnv * env, jobject proc, jint pid) (JNIEnv * env, jobject proc, jint pid)
{ {
int stat_loc; int stat_loc;
return (waitpid(pid, &stat_loc, WEXITED)); return (waitpid(pid, &stat_loc, WEXITED));
} }
@ -228,13 +233,13 @@ JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_Spawner_waitFor
void ThrowByName(JNIEnv *env, const char *name, const char *msg) void ThrowByName(JNIEnv *env, const char *name, const char *msg)
{ {
jclass cls = (*env)->FindClass(env, name); jclass cls = (*env)->FindClass(env, name);
if (cls != 0) /* Otherwise an exception has already been thrown */ if (cls != 0) /* Otherwise an exception has already been thrown */
(*env)->ThrowNew(env, cls, msg); (*env)->ThrowNew(env, cls, msg);
/* It's a good practice to clean up the local references. */ /* It's a good practice to clean up the local references. */
(*env)->DeleteLocalRef(env, cls); (*env)->DeleteLocalRef(env, cls);
} }