diff src/os/bsd/dtrace/jvm_dtrace.h @ 4006:436b4a3231bf

7098194: integrate macosx-port changes Summary: Integrate bsd-port/hotspot and macosx-port/hotspot changes as of 2011.09.29. Reviewed-by: kvn, dholmes, never, phh Contributed-by: Christos Zoulas <christos@zoulas.com>, Greg Lewis <glewis@eyesbeyond.com>, Kurt Miller <kurt@intricatesoftware.com>, Alexander Strange <astrange@apple.com>, Mike Swingler <swingler@apple.com>, Roger Hoover <rhoover@apple.com>, Victor Hernandez <vhernandez@apple.com>, Pratik Solanki <psolanki@apple.com>
author dcubed
date Thu, 13 Oct 2011 09:35:42 -0700
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/os/bsd/dtrace/jvm_dtrace.h	Thu Oct 13 09:35:42 2011 -0700
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+/*
+ * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef _JVM_DTRACE_H_
+#define _JVM_DTRACE_H_
+
+/*
+ * Interface to dynamically turn on probes in Hotspot JVM. Currently,
+ * this interface can be used to dynamically enable certain DTrace
+ * probe points that are costly to have "always on".
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <sys/types.h>
+
+
+struct _jvm_t;
+typedef struct _jvm_t jvm_t;
+
+
+/* Attach to the given JVM process. Returns NULL on failure.
+   jvm_get_last_error() returns last error message. */
+jvm_t* jvm_attach(pid_t pid);
+
+/* Returns the last error message from this library or NULL if none. */
+const char* jvm_get_last_error();
+
+/* few well-known probe type constants for 'probe_types' param below */
+
+#define JVM_DTPROBE_METHOD_ENTRY         "method-entry"
+#define JVM_DTPROBE_METHOD_RETURN        "method-return"
+#define JVM_DTPROBE_MONITOR_ENTER        "monitor-contended-enter"
+#define JVM_DTPROBE_MONITOR_ENTERED      "monitor-contended-entered"
+#define JVM_DTPROBE_MONITOR_EXIT         "monitor-contended-exit"
+#define JVM_DTPROBE_MONITOR_WAIT         "monitor-wait"
+#define JVM_DTPROBE_MONITOR_WAITED       "monitor-waited"
+#define JVM_DTPROBE_MONITOR_NOTIFY       "monitor-notify"
+#define JVM_DTPROBE_MONITOR_NOTIFYALL    "monitor-notifyall"
+#define JVM_DTPROBE_OBJECT_ALLOC         "object-alloc"
+#define JVM_DTPROBE_ALL                  "*"
+
+/* Enable the specified DTrace probes of given probe types on
+ * the specified JVM. Returns >= 0 on success, -1 on failure.
+ * On success, this returns number of probe_types enabled.
+ * On failure, jvm_get_last_error() returns the last error message.
+ */
+int jvm_enable_dtprobes(jvm_t* jvm, int num_probe_types, const char** probe_types);
+
+/* Note: There is no jvm_disable_dtprobes function. Probes are automatically
+ * disabled when there are no more clients requiring those probes.
+ */
+
+/* Detach the given JVM. Returns 0 on success, -1 on failure.
+ * jvm_get_last_error() returns the last error message.
+ */
+int jvm_detach(jvm_t* jvm);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _JVM_DTRACE_H_ */