// prims.cc - Code for core of runtime environment.
-/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation
+/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation
This file is part of libgcj.
static char defaultJdwpOptions[] = "";
static char *jdwpOptions = defaultJdwpOptions;
+// Typedefs for JVMTI agent functions.
+typedef jint jvmti_agent_onload_func (JavaVM *vm, char *options,
+ void *reserved);
+typedef jint jvmti_agent_onunload_func (JavaVM *vm);
+
+// JVMTI agent function pointers.
+static jvmti_agent_onload_func *jvmti_agentonload = NULL;
+static jvmti_agent_onunload_func *jvmti_agentonunload = NULL;
+static char *jvmti_agent_opts;
+
// Argument support.
int
_Jv_GetNbArgs (void)
return 0;
}
+// This function loads the agent functions for JVMTI from the library indicated
+// by name. It returns a negative value on failure, the value of which
+// indicates where ltdl failed, it also prints an error message.
+static jint
+load_jvmti_agent (const char *name)
+{
+#ifdef USE_LTDL
+ if (lt_dlinit ())
+ {
+ fprintf (stderr,
+ "libgcj: Error in ltdl init while loading agent library.\n");
+ return -1;
+ }
+
+ lt_dlhandle lib = lt_dlopenext (name);
+ if (!lib)
+ {
+ fprintf (stderr,
+ "libgcj: Error opening agent library.\n");
+ return -2;
+ }
+
+ if (lib)
+ {
+ jvmti_agentonload
+ = (jvmti_agent_onload_func *) lt_dlsym (lib, "Agent_OnLoad");
+
+ if (!jvmti_agentonload)
+ {
+ fprintf (stderr,
+ "libgcj: Error finding agent function in library %s.\n",
+ name);
+ lt_dlclose (lib);
+ lib = NULL;
+ return -4;
+ }
+ else
+ {
+ jvmti_agentonunload
+ = (jvmti_agent_onunload_func *) lt_dlsym (lib, "Agent_OnUnload");
+
+ return 0;
+ }
+ }
+ else
+ {
+ fprintf (stderr, "libgcj: Library %s not found in library path.\n", name);
+ return -3;
+ }
+
+#endif /* USE_LTDL */
+
+ // If LTDL cannot be used, return an error code indicating this.
+ return -99;
+}
+
static jint
parse_init_args (JvVMInitArgs* vm_args)
{
for (int i = 0; i < vm_args->nOptions; ++i)
{
char* option_string = vm_args->options[i].optionString;
+
if (! strcmp (option_string, "vfprintf")
|| ! strcmp (option_string, "exit")
|| ! strcmp (option_string, "abort"))
continue;
}
+ else if (! strncmp (option_string, "-agentlib", sizeof ("-agentlib") - 1))
+ {
+ char *strPtr;
+
+ if (strlen(option_string) > (sizeof ("-agentlib:") - 1))
+ strPtr = &option_string[sizeof ("-agentlib:") - 1];
+ else
+ {
+ fprintf (stderr,
+ "libgcj: Malformed agentlib argument %s: expected lib name\n",
+ option_string);
+ return -1;
+ }
+
+ // These are optional arguments to pass to the agent library.
+ jvmti_agent_opts = strchr (strPtr, '=');
+
+ if (! strncmp (strPtr, "jdwp", 4))
+ {
+ // We want to run JDWP here so set the correct variables.
+ remoteDebug = true;
+ jdwpOptions = ++jvmti_agent_opts;
+ }
+ else
+ {
+ jint nameLength;
+
+ if (jvmti_agent_opts == NULL)
+ nameLength = strlen (strPtr);
+ else
+ {
+ nameLength = jvmti_agent_opts - strPtr;
+ jvmti_agent_opts++;
+ }
+
+ char lib_name[nameLength + 3 + 1];
+ strcpy (lib_name, "lib");
+ strncat (lib_name, strPtr, nameLength);
+
+ jint result = load_jvmti_agent (lib_name);
+
+ if (result < 0)
+ {
+ return -1;
+ }
+
+ // Mark JVMTI active
+ JVMTI::enabled = true;
+ }
+
+ continue;
+ }
+ else if (! strncmp (option_string, "-agentpath:",
+ sizeof ("-agentpath:") - 1))
+ {
+ char *strPtr;
+
+ if (strlen(option_string) > 10)
+ strPtr = &option_string[10];
+ else
+ {
+ fprintf (stderr,
+ "libgcj: Malformed agentlib argument %s: expected lib path\n",
+ option_string);
+ return -1;
+ }
+
+ // These are optional arguments to pass to the agent library.
+ jvmti_agent_opts = strchr (strPtr, '=');
+
+ jint nameLength;
+
+ if (jvmti_agent_opts == NULL)
+ nameLength = strlen (strPtr);
+ else
+ {
+ nameLength = jvmti_agent_opts - strPtr;
+ jvmti_agent_opts++;
+ }
+
+ char lib_name[nameLength + 3 + 1];
+ strcpy (lib_name, "lib");
+ strncat (lib_name, strPtr, nameLength);
+ jint result = load_jvmti_agent (strPtr);
+
+ if (result < 0)
+ {
+ return -1;
+ }
+
+ // Mark JVMTI active
+ JVMTI::enabled = true;
+ continue;
+ }
else if (vm_args->ignoreUnrecognized)
{
if (option_string[0] == '_')
main_thread = new MainThread (JvNewStringUTF (name),
arg_vec, is_jar);
_Jv_AttachCurrentThread (main_thread);
+
+ // Start JVMTI if an agent function has been found.
+ if (jvmti_agentonload)
+ (*jvmti_agentonload) (_Jv_GetJavaVM (), jvmti_agent_opts, NULL);
// Start JDWP
if (remoteDebug)
using namespace gnu::classpath::jdwp;
VMVirtualMachine::initialize ();
Jdwp *jdwp = new Jdwp ();
- jdwp->setDaemon (true);
+ jdwp->setDaemon (true);
jdwp->configure (JvNewStringLatin1 (jdwpOptions));
jdwp->start ();
// Wait for JDWP to initialize and start
jdwp->join ();
}
-
// Send VMInit
if (JVMTI_REQUESTED_EVENT (VMInit))
_Jv_JVMTI_PostEvent (JVMTI_EVENT_VM_INIT, main_thread);
JNIEnv *jni_env = _Jv_GetCurrentJNIEnv ();
_Jv_JVMTI_PostEvent (JVMTI_EVENT_VM_DEATH, thread, jni_env);
}
+
+ // Run JVMTI AgentOnUnload if it exists and an agent is loaded.
+ if (jvmti_agentonunload)
+ (*jvmti_agentonunload) (_Jv_GetJavaVM ());
// If we got here then something went wrong, as MainThread is not
// supposed to terminate.
OSDN Git Service
