src/share/bin/java.c

rev 9771 : 8042469 : Launcher changes for native memory tracking scalability enhancement

*** 1002,1011 ****
--- 1002,1012 ----
  {
      int argc = *pargc;
      char **argv = *pargv;
      int mode = LM_UNKNOWN;
      char *arg;
+     static const char*  NMT_Env_Name    = "NMT_LEVEL_";
  
      *pret = 0;
  
      while ((arg = *argv) != 0 && *arg == '-') {
          argv++; --argc;
*** 1029,1038 ****
--- 1030,1073 ----
              showVersion = JNI_TRUE;
          } else if (JLI_StrCmp(arg, "-X") == 0) {
              printXUsage = JNI_TRUE;
              return JNI_TRUE;
  /*
+  * The following case checks for "-XX:NativeMemoryTracking=value".
+  * If value is non null, an environmental variable set to this value
+  * will be created to be used by the JVM.
+  * The argument is passed to the JVM, which will check validity.
+  */
+         } else if (JLI_StrCCmp(arg, "-XX:NativeMemoryTracking=") == 0) {
+             int retval;
+             // get what follows this parameter, include "="
+             size_t pnlen = JLI_StrLen("-XX:NativeMemoryTracking=");
+             if (JLI_StrLen(arg) > pnlen) {
+                 char* value = arg + pnlen;
+                 size_t pbuflen = pnlen + JLI_StrLen(value) + 10; // 10 max pid#
+                 char * pbuf = malloc(pbuflen);
+                 JLI_Snprintf(pbuf, pbuflen, "%s%d=%s", NMT_Env_Name, JLI_GetPid(), value);
+                 retval = JLI_PutEnv(pbuf);
+                 if (JLI_IsTraceLauncher()) {
+                     char* envName;
+                     char* envBuf;
+ 
+                     envName = malloc(pbuflen);
+                     JLI_Snprintf(envName, pbuflen, "%s%d", NMT_Env_Name, JLI_GetPid());
+                     
+                     printf("TRACER_MARKER: NativeMemoryTracking: env var is %s\n",envName);
+                     printf("TRACER_MARKER: NativeMemoryTracking: putenv arg %s\n",pbuf);
+                     envBuf = getenv(envName);
+                     printf("TRACER_MARKER: NativeMemoryTracking: got value %s\n",envBuf);
+                 }
+ 
+                 free(pbuf);
+             }
+ 
+             // The argument is passed to JVM for comment.
+             AddOption(arg, NULL);
+ /*
   * The following case checks for -XshowSettings OR -XshowSetting:SUBOPT.
   * In the latter case, any SUBOPT value not recognized will default to "all"
   */
          } else if (JLI_StrCmp(arg, "-XshowSettings") == 0 ||
                  JLI_StrCCmp(arg, "-XshowSettings:") == 0) {