src/share/vm/runtime/vm_version.cpp

rev 3024 : 7132779: build-infra merge: Enable ccache to work for most developer builds.
Summary: When a build number is not specified, the JRE_RELEASE_VERSION define contains a date and timestamp. Thus ccache cannot cache the object files for longer than a minute since the define is passed to the compilation of all source files. This change passes JRE_RELEASE_VERSION only to vm_version.cpp and adds a function jre_release_version() to Abstract_VM_Version. This allows all other source files to be ccached.
Reviewed-by: ohair, rottenha
Contributed-by: fredrik.ohrstrom@oracle.com

*** 163,172 ****
--- 163,179 ----
  //       stringStream cannot get resource allocated and will SEGV.
  const char* Abstract_VM_Version::vm_release() {
    return VM_RELEASE;
  }
  
+ // NOTE: do *not* use stringStream. this function is called by
+ //       fatal error handlers. if the crash is in native thread,
+ //       stringStream cannot get resource allocated and will SEGV.
+ const char* Abstract_VM_Version::jre_release_version() {
+   return JRE_RELEASE_VERSION;
+ }
+ 
  #define OS       LINUX_ONLY("linux")             \
                   WINDOWS_ONLY("windows")         \
                   SOLARIS_ONLY("solaris")         \
                   BSD_ONLY("bsd")