Hook Namespace Reference

Hook points are inline functions acting as probes scattered throughout several VM subsystems. More...

Functions
void	breakpoint (Breakpoint *bp)
bool	class_linked (classinfo *c)
void	class_loaded (classinfo *c)
void	jit_generated (methodinfo *m, codeinfo *code)
	Hook point just after code was generated. More...
void	jit_recycled (methodinfo *m, codeinfo *code)
void	method_enter (methodinfo *m)
void	method_exit (methodinfo *m)
void	method_unwind (methodinfo *m)
void	native_resolved (methodinfo *m, void *symbol, void **symbolptr)
void	thread_start (threadobject *t)
void	thread_end (threadobject *t)
void	vm_init ()
	Hook point after the VM is initialized. More...
void	vm_preinit ()
	Hook point before the VM is initialized. More...
void	vm_shutdown ()
	Hook point before the VM is actually destroyed. More...
bool	class_linked_dynoffsets (classinfo *c)

Detailed Description

Hook points are inline functions acting as probes scattered throughout several VM subsystems.

They can be used to implement event generation or statistics gathering without polluting the source code. Hence all compiler macro and runtime checks should be done in this file. One example of where hooks are useful is JVMTI event firing.

Function Documentation

void Hook::breakpoint ( Breakpoint *  bp )

inline

Definition at line 70 of file hook.hpp.

bool Hook::class_linked ( classinfo *  c )

inline

Definition at line 81 of file hook.hpp.

bool Hook::class_linked_dynoffsets

(

classinfo *

c

)

Definition at line 32 of file hook.cpp.

void Hook::class_loaded ( classinfo *  c )

inline

Definition at line 89 of file hook.hpp.

void Hook::jit_generated ( methodinfo *  m, codeinfo *  code  )

inline

Hook point just after code was generated.

Note that one method can have multiple code realizations, the hook is fired for each of them. The code was not yet executed.

Parameters

m	The method for which code was generated.
code	The fully initialized codeinfo for the generated code.

Definition at line 102 of file hook.hpp.

void Hook::jit_recycled	(	methodinfo *	m,
		codeinfo *	code
	)

void Hook::method_enter ( methodinfo *  m )

inline

Definition at line 110 of file hook.hpp.

void Hook::method_exit ( methodinfo *  m )

inline

Definition at line 115 of file hook.hpp.

void Hook::method_unwind ( methodinfo *  m )

inline

Definition at line 120 of file hook.hpp.

void Hook::native_resolved ( methodinfo *  m, void *  symbol, void **  symbolptr  )

inline

Definition at line 125 of file hook.hpp.

void Hook::thread_end ( threadobject *  t )

inline

Definition at line 135 of file hook.hpp.

void Hook::thread_start ( threadobject *  t )

inline

Definition at line 130 of file hook.hpp.

void Hook::vm_init ( )

inline

Hook point after the VM is initialized.

At this point the VM is fully operating and ready to execute Java code. Final intializations and thread startup should be done here.

Definition at line 145 of file hook.hpp.

void Hook::vm_preinit ( )

inline

Hook point before the VM is initialized.

At this point the VM can not yet execute Java code but some central native subsystems are initialized. Only basic initialization steps should be done here.

Definition at line 155 of file hook.hpp.

void Hook::vm_shutdown ( )

inline

Hook point before the VM is actually destroyed.

At this point the VM is still running, but all non-daemon threads have terminated and resources are ready to be reclaimed. Final cleanup tasks should be done here.

Definition at line 168 of file hook.hpp.