cvs commit: jakarta-tomcat-connectors/jk/native/common jk_jni_worker.c

[costin]

costin      01/12/04 13:46:31

  Modified:    jk/native/common jk_jni_worker.c
  Log:
  Second patch from Julius Gawlas.
  
  Detect if the VM is already started and attach.
  
  Submitted by:  "GAWLAS,JULIUS (HP-Cupertino,ex1)" <[EMAIL PROTECTED]>
  
  Revision  Changes    Path
  1.8       +21 -4     jakarta-tomcat-connectors/jk/native/common/jk_jni_worker.c
  
  Index: jk_jni_worker.c
  ===================================================================
  RCS file: /home/cvs/jakarta-tomcat-connectors/jk/native/common/jk_jni_worker.c,v
  retrieving revision 1.7
  retrieving revision 1.8
  diff -u -r1.7 -r1.8
  --- jk_jni_worker.c   2001/12/04 19:44:23     1.7
  +++ jk_jni_worker.c   2001/12/04 21:46:30     1.8
  @@ -59,7 +59,7 @@
    * Description: In process JNI worker                                      *
    * Author:      Gal Shachor <[EMAIL PROTECTED]>                           *
    * Based on:                                                               *
  - * Version:     $Revision: 1.7 $                                           *
  + * Version:     $Revision: 1.8 $                                           *
    ***************************************************************************/
   
   #if !defined(WIN32) && !defined(NETWARE)
  @@ -744,8 +744,10 @@
       } else {
           jni_create_java_vm = dlsym(handle, "JNI_CreateJavaVM");
           jni_get_default_java_vm_init_args = dlsym(handle, 
"JNI_GetDefaultJavaVMInitArgs");
  +        jni_get_created_java_vms =  dlsym(hInst, "JNI_GetCreatedJavaVMs");
   
  -        if(jni_create_java_vm && jni_get_default_java_vm_init_args) {
  +        if(jni_create_java_vm && jni_get_default_java_vm_init_args &&
  +           jni_get_created_java_vms) {
            jk_log(l, JK_LOG_DEBUG, 
                      "In load_jvm_dll, symbols resolved, done\n");
               return JK_TRUE;
  @@ -918,7 +920,7 @@
                       jk_logger_t *l)
   {
       JavaVMInitArgs vm_args;
  -    JNIEnv *penv;
  +    JNIEnv *penv = NULL;
       JavaVMOption options[100];
       int optn = 0, err;
       char* tmp;
  @@ -984,8 +986,23 @@
       }
   
       jk_log(l, JK_LOG_DEBUG, "In open_jvm2, about to create JVM...\n");
  +
  +    err=jni_create_java_vm(&(p->jvm), &penv, &vm_args);
  +
  +    if (JNI_EEXIST == err) {
  +        int vmCount;
  +       jk_log(l, JK_LOG_DEBUG, "JVM alread instantiated."
  +              "Trying to attach instead.\n");
  +
  +        jni_get_created_java_vms(&(p->jvm), 1, &vmCount);
  +        if (NULL != p->jvm)
  +            penv = attach_to_jvm(p, l);
  +
  +        if (NULL != penv)
  +            err = 0;
  +    }
   
  -    if((err=jni_create_java_vm(&(p->jvm), &penv, &vm_args)) != 0) {
  +    if(err != 0) {
        jk_log(l, JK_LOG_EMERG, "Fail-> could not create JVM, code: %d \n", err); 
           return JK_FALSE;
       }
  
  
  

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