--- a/jdk/src/windows/bin/java_md.c Wed Oct 20 14:41:39 2010 +0900
+++ b/jdk/src/windows/bin/java_md.c Wed Oct 20 15:08:39 2010 +0400
@@ -51,6 +51,92 @@
static jboolean GetJREPath(char *path, jint pathsize);
static void EnsureJreInstallation(const char *jrepath);
+/* We supports warmup for UI stack that is performed in parallel
+ * to VM initialization.
+ * This helps to improve startup of UI application as warmup phase
+ * might be long due to initialization of OS or hardware resources.
+ * It is not CPU bound and therefore it does not interfere with VM init.
+ * Obviously such warmup only has sense for UI apps and therefore it needs
+ * to be explicitly requested by passing -Dsun.awt.warmup=true property
+ * (this is always the case for plugin/javaws).
+ *
+ * Implementation launches new thread after VM starts and use it to perform
+ * warmup code (platform dependent).
+ * This thread is later reused as AWT toolkit thread as graphics toolkit
+ * often assume that they are used from the same thread they were launched on.
+ *
+ * At the moment we only support warmup for D3D. It only possible on windows
+ * and only if other flags do not prohibit this (e.g. OpenGL support requested).
+ */
+#undef ENABLE_AWT_PRELOAD
+#ifndef JAVA_ARGS /* turn off AWT preloading for javac, jar, etc */
+ #define ENABLE_AWT_PRELOAD
+#endif
+
+#ifdef ENABLE_AWT_PRELOAD
+/* "AWT was preloaded" flag;
+ * turned on by AWTPreload().
+ */
+int awtPreloaded = 0;
+
+/* Calls a function with the name specified
+ * the function must be int(*fn)(void).
+ */
+int AWTPreload(const char *funcName);
+/* stops AWT preloading */
+void AWTPreloadStop();
+
+/* D3D preloading */
+/* -1: not initialized; 0: OFF, 1: ON */
+int awtPreloadD3D = -1;
+/* command line parameter to swith D3D preloading on */
+#define PARAM_PRELOAD_D3D "-Dsun.awt.warmup"
+/* D3D/OpenGL management parameters */
+#define PARAM_NODDRAW "-Dsun.java2d.noddraw"
+#define PARAM_D3D "-Dsun.java2d.d3d"
+#define PARAM_OPENGL "-Dsun.java2d.opengl"
+/* funtion in awt.dll (src/windows/native/sun/java2d/d3d/D3DPipelineManager.cpp) */
+#define D3D_PRELOAD_FUNC "preloadD3D"
+
+
+/* Extracts value of a parameter with the specified name
+ * from command line argument (returns pointer in the argument).
+ * Returns NULL if the argument does not contains the parameter.
+ * e.g.:
+ * GetParamValue("theParam", "theParam=value") returns pointer to "value".
+ */
+const char * GetParamValue(const char *paramName, const char *arg) {
+ int nameLen = JLI_StrLen(paramName);
+ if (JLI_StrNCmp(paramName, arg, nameLen) == 0) {
+ /* arg[nameLen] is valid (may contain final NULL) */
+ if (arg[nameLen] == '=') {
+ return arg + nameLen + 1;
+ }
+ }
+ return NULL;
+}
+
+/* Checks if commandline argument contains property specified
+ * and analyze it as boolean property (true/false).
+ * Returns -1 if the argument does not contain the parameter;
+ * Returns 1 if the argument contains the parameter and its value is "true";
+ * Returns 0 if the argument contains the parameter and its value is "false".
+ */
+int GetBoolParamValue(const char *paramName, const char *arg) {
+ const char * paramValue = GetParamValue(paramName, arg);
+ if (paramValue != NULL) {
+ if (JLI_StrCaseCmp(paramValue, "true") == 0) {
+ return 1;
+ }
+ if (JLI_StrCaseCmp(paramValue, "false") == 0) {
+ return 0;
+ }
+ }
+ return -1;
+}
+#endif /* ENABLE_AWT_PRELOAD */
+
+
static jboolean _isjavaw = JNI_FALSE;
@@ -132,6 +218,30 @@
exit(4);
}
/* If we got here, jvmpath has been correctly initialized. */
+
+ /* Check if we need preload AWT */
+#ifdef ENABLE_AWT_PRELOAD
+ argv = *pargv;
+ for (i = 0; i < *pargc ; i++) {
+ /* Tests the "turn on" parameter only if not set yet. */
+ if (awtPreloadD3D < 0) {
+ if (GetBoolParamValue(PARAM_PRELOAD_D3D, argv[i]) == 1) {
+ awtPreloadD3D = 1;
+ }
+ }
+ /* Test parameters which can disable preloading if not already disabled. */
+ if (awtPreloadD3D != 0) {
+ if (GetBoolParamValue(PARAM_NODDRAW, argv[i]) == 1
+ || GetBoolParamValue(PARAM_D3D, argv[i]) == 0
+ || GetBoolParamValue(PARAM_OPENGL, argv[i]) == 1)
+ {
+ awtPreloadD3D = 0;
+ /* no need to test the rest of the parameters */
+ break;
+ }
+ }
+ }
+#endif /* ENABLE_AWT_PRELOAD */
}
@@ -1087,6 +1197,40 @@
0,
&thread_id);
}
+
+ /* AWT preloading (AFTER main thread start) */
+#ifdef ENABLE_AWT_PRELOAD
+ /* D3D preloading */
+ if (awtPreloadD3D != 0) {
+ char *envValue;
+ /* D3D routines checks env.var J2D_D3D if no appropriate
+ * command line params was specified
+ */
+ envValue = getenv("J2D_D3D");
+ if (envValue != NULL && JLI_StrCaseCmp(envValue, "false") == 0) {
+ awtPreloadD3D = 0;
+ }
+ /* Test that AWT preloading isn't disabled by J2D_D3D_PRELOAD env.var */
+ envValue = getenv("J2D_D3D_PRELOAD");
+ if (envValue != NULL && JLI_StrCaseCmp(envValue, "false") == 0) {
+ awtPreloadD3D = 0;
+ }
+ if (awtPreloadD3D < 0) {
+ /* If awtPreloadD3D is still undefined (-1), test
+ * if it is turned on by J2D_D3D_PRELOAD env.var.
+ * By default it's turned OFF.
+ */
+ awtPreloadD3D = 0;
+ if (envValue != NULL && JLI_StrCaseCmp(envValue, "true") == 0) {
+ awtPreloadD3D = 1;
+ }
+ }
+ }
+ if (awtPreloadD3D) {
+ AWTPreload(D3D_PRELOAD_FUNC);
+ }
+#endif /* ENABLE_AWT_PRELOAD */
+
if (thread_handle) {
WaitForSingleObject(thread_handle, INFINITE);
GetExitCodeThread(thread_handle, &rslt);
@@ -1094,6 +1238,13 @@
} else {
rslt = continuation(args);
}
+
+#ifdef ENABLE_AWT_PRELOAD
+ if (awtPreloaded) {
+ AWTPreloadStop();
+ }
+#endif /* ENABLE_AWT_PRELOAD */
+
return rslt;
}
@@ -1140,3 +1291,98 @@
_isjavaw = javaw;
JLI_SetTraceLauncher();
}
+
+
+/* ============================== */
+/* AWT preloading */
+#ifdef ENABLE_AWT_PRELOAD
+
+typedef int FnPreloadStart(void);
+typedef void FnPreloadStop(void);
+static FnPreloadStop *fnPreloadStop = NULL;
+static HMODULE hPreloadAwt = NULL;
+
+/*
+ * Starts AWT preloading
+ */
+int AWTPreload(const char *funcName)
+{
+ int result = -1;
+ /* load AWT library once (if several preload function should be called) */
+ if (hPreloadAwt == NULL) {
+ /* awt.dll is not loaded yet */
+ char libraryPath[MAXPATHLEN];
+ int jrePathLen = 0;
+ HMODULE hJava = NULL;
+ HMODULE hVerify = NULL;
+
+ while (1) {
+ /* awt.dll depends on jvm.dll & java.dll;
+ * jvm.dll is already loaded, so we need only java.dll;
+ * java.dll depends on MSVCRT lib & verify.dll.
+ */
+ if (!GetJREPath(libraryPath, MAXPATHLEN)) {
+ break;
+ }
+
+ /* save path length */
+ jrePathLen = JLI_StrLen(libraryPath);
+
+ /* load msvcrt 1st */
+ LoadMSVCRT();
+
+ /* load verify.dll */
+ JLI_StrCat(libraryPath, "\\bin\\verify.dll");
+ hVerify = LoadLibrary(libraryPath);
+ if (hVerify == NULL) {
+ break;
+ }
+
+ /* restore jrePath */
+ libraryPath[jrePathLen] = 0;
+ /* load java.dll */
+ JLI_StrCat(libraryPath, "\\bin\\" JAVA_DLL);
+ hJava = LoadLibrary(libraryPath);
+ if (hJava == NULL) {
+ break;
+ }
+
+ /* restore jrePath */
+ libraryPath[jrePathLen] = 0;
+ /* load awt.dll */
+ JLI_StrCat(libraryPath, "\\bin\\awt.dll");
+ hPreloadAwt = LoadLibrary(libraryPath);
+ if (hPreloadAwt == NULL) {
+ break;
+ }
+
+ /* get "preloadStop" func ptr */
+ fnPreloadStop = (FnPreloadStop *)GetProcAddress(hPreloadAwt, "preloadStop");
+
+ break;
+ }
+ }
+
+ if (hPreloadAwt != NULL) {
+ FnPreloadStart *fnInit = (FnPreloadStart *)GetProcAddress(hPreloadAwt, funcName);
+ if (fnInit != NULL) {
+ /* don't forget to stop preloading */
+ awtPreloaded = 1;
+
+ result = fnInit();
+ }
+ }
+
+ return result;
+}
+
+/*
+ * Terminates AWT preloading
+ */
+void AWTPreloadStop() {
+ if (fnPreloadStop != NULL) {
+ fnPreloadStop();
+ }
+}
+
+#endif /* ENABLE_AWT_PRELOAD */