318 lines
12 KiB
C
318 lines
12 KiB
C
/*
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* Copyright (c) 1998, 2005, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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/*
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* HotSpot integration note:
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*
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* This is a consolidation of these two files:
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* src/share/hpi/export/hpi.h 1.15 99/06/18 JDK1.3 beta build I
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* src/share/hpi/export/dll.h 1.3 98/09/15 JDK1.3 beta build I
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* from the classic VM.
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*
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* bool_t is a type in the classic VM, and we define it here,
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* but in the future this should be a jboolean.
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*
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* The files are included verbatim expect for local includes removed from hpi.h.
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*/
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#ifndef _JAVASOFT_HPI_H_
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#define _JAVASOFT_HPI_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* A classic VMism that should become a jboolean. Fix in 1.2.1? */
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typedef enum { HPI_FALSE = 0, HPI_TRUE = 1 } bool_t;
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/*
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* DLL.H: A common interface for helper DLLs loaded by the VM.
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* Each library exports the main entry point "DLL_Initialize". Through
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* that function the programmer can obtain a function pointer which has
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* type "GetInterfaceFunc." Through the function pointer the programmer
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* can obtain other interfaces supported in the DLL.
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*/
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typedef jint (JNICALL * GetInterfaceFunc)
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(void **intfP, const char *name, jint ver);
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jint JNICALL DLL_Initialize(GetInterfaceFunc *, void *args);
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/*
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* Host Porting Interface. This defines the "porting layer" for
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* POSIX.1 compliant operating systems.
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*/
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/*
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* memory allocations
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*/
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typedef struct {
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/*
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* Malloc must return a unique pointer if size == 0.
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*/
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void * (*Malloc)(size_t size);
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void * (*Realloc)(void *ptr, size_t new_size);
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/*
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* Free must allow ptr == NULL to be a no-op.
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*/
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void (*Free)(void *ptr);
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/*
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* Calloc must return a unique pointer for if
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* n_item == 0 || item_size == 0.
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*/
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void * (*Calloc)(size_t n_item, size_t item_size);
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char * (*Strdup)(const char *str);
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void * (*MapMem)(size_t req_size, size_t *maped_size);
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void * (*UnmapMem)(void *req_addr, size_t req_size, size_t *unmap_size);
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/*
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* CommitMem should round the ptr down to the nearest page and
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* round the size up to the nearest page so that the committed
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* region is at least as large as the requested region.
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*/
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void * (*CommitMem)(void *ptr, size_t size, size_t *actual);
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/*
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* sysDecommitMem should round the ptr up to the nearest page and
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* round the size down to the nearest page so that the decommitted
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* region is no greater than the requested region.
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*/
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void * (*DecommitMem)(void *ptr, size_t size, size_t *actual);
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#define HPI_PAGE_ALIGNMENT (64 * 1024)
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void * (*AllocBlock)(size_t size, void **headP);
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void (*FreeBlock)(void *head);
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} HPI_MemoryInterface;
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/*
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* dynamic linking libraries
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*/
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typedef struct {
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void (*BuildLibName)(char *buf, int buf_len, char *path, const char *name);
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int (*BuildFunName)(char *name, int name_len, int arg_size, int en_idx);
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void * (*LoadLibrary)(const char *name, char *err_buf, int err_buflen);
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void (*UnloadLibrary)(void *lib);
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void * (*FindLibraryEntry)(void *lib, const char *name);
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} HPI_LibraryInterface;
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typedef void (*signal_handler_t)(int sig, void *siginfo, void *context);
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#define HPI_SIG_DFL (signal_handler_t)0
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#define HPI_SIG_ERR (signal_handler_t)-1
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#define HPI_SIG_IGN (signal_handler_t)1
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typedef struct {
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char *name; /* name such as green/native threads. */
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int isMP;
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} HPI_SysInfo;
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typedef struct {
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HPI_SysInfo * (*GetSysInfo)(void);
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long (*GetMilliTicks)(void);
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jlong (*TimeMillis)(void);
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signal_handler_t (*Signal)(int sig, signal_handler_t handler);
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void (*Raise)(int sig);
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void (*SignalNotify)(int sig);
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int (*SignalWait)(void);
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int (*Shutdown)(void);
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int (*SetLoggingLevel)(int level);
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bool_t (*SetMonitoringOn)(bool_t on);
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int (*GetLastErrorString)(char *buf, int len);
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} HPI_SystemInterface;
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/*
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* threads and monitors
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*/
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typedef struct sys_thread sys_thread_t;
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typedef struct sys_mon sys_mon_t;
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#define HPI_OK 0
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#define HPI_ERR -1
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#define HPI_INTRPT -2 /* Operation was interrupted */
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#define HPI_TIMEOUT -3 /* A timer ran out */
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#define HPI_NOMEM -5 /* Ran out of memory */
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#define HPI_NORESOURCE -6 /* Ran out of some system resource */
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/* There are three basic states: RUNNABLE, MONITOR_WAIT, and CONDVAR_WAIT.
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* When the thread is suspended in any of these states, the
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* HPI_THREAD_SUSPENDED bit will be set
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*/
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enum {
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HPI_THREAD_RUNNABLE = 1,
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HPI_THREAD_MONITOR_WAIT,
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HPI_THREAD_CONDVAR_WAIT
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};
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#define HPI_MINIMUM_PRIORITY 1
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#define HPI_MAXIMUM_PRIORITY 10
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#define HPI_NORMAL_PRIORITY 5
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#define HPI_THREAD_SUSPENDED 0x8000
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#define HPI_THREAD_INTERRUPTED 0x4000
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typedef struct {
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sys_thread_t *owner;
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int entry_count;
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sys_thread_t **monitor_waiters;
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sys_thread_t **condvar_waiters;
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int sz_monitor_waiters;
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int sz_condvar_waiters;
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int n_monitor_waiters;
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int n_condvar_waiters;
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} sys_mon_info;
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typedef struct {
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int (*ThreadBootstrap)(sys_thread_t **tidP,
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sys_mon_t **qlockP,
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int nReservedBytes);
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int (*ThreadCreate)(sys_thread_t **tidP,
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long stk_size,
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void (*func)(void *),
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void *arg);
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sys_thread_t * (*ThreadSelf)(void);
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void (*ThreadYield)(void);
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int (*ThreadSuspend)(sys_thread_t *tid);
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int (*ThreadResume)(sys_thread_t *tid);
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int (*ThreadSetPriority)(sys_thread_t *tid, int prio);
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int (*ThreadGetPriority)(sys_thread_t *tid, int *prio);
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void * (*ThreadStackPointer)(sys_thread_t *tid);
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void * (*ThreadStackTop)(sys_thread_t *tid);
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long * (*ThreadRegs)(sys_thread_t *tid, int *regs);
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int (*ThreadSingle)(void);
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void (*ThreadMulti)(void);
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int (*ThreadEnumerateOver)(int (*func)(sys_thread_t *, void *),
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void *arg);
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int (*ThreadCheckStack)(void);
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void (*ThreadPostException)(sys_thread_t *tid, void *arg);
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void (*ThreadInterrupt)(sys_thread_t *tid);
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int (*ThreadIsInterrupted)(sys_thread_t *tid, int clear);
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int (*ThreadAlloc)(sys_thread_t **tidP);
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int (*ThreadFree)(void);
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jlong (*ThreadCPUTime)(void);
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int (*ThreadGetStatus)(sys_thread_t *tid, sys_mon_t **monitor);
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void * (*ThreadInterruptEvent)(void);
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void * (*ThreadNativeID)(sys_thread_t *tid);
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/* These three functions are used by the CPU time profiler.
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* sysThreadIsRunning determines whether the thread is running (not just
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* runnable). It is only safe to call this function after calling
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* sysThreadProfSuspend.
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*/
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bool_t (*ThreadIsRunning)(sys_thread_t *tid);
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void (*ThreadProfSuspend)(sys_thread_t *tid);
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void (*ThreadProfResume)(sys_thread_t *tid);
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int (*AdjustTimeSlice)(int ms);
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size_t (*MonitorSizeof)(void);
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int (*MonitorInit)(sys_mon_t *mid);
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int (*MonitorDestroy)(sys_mon_t *mid);
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int (*MonitorEnter)(sys_thread_t *self, sys_mon_t *mid);
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bool_t (*MonitorEntered)(sys_thread_t *self, sys_mon_t *mid);
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int (*MonitorExit)(sys_thread_t *self, sys_mon_t *mid);
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int (*MonitorNotify)(sys_thread_t *self, sys_mon_t *mid);
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int (*MonitorNotifyAll)(sys_thread_t *self, sys_mon_t *mid);
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int (*MonitorWait)(sys_thread_t *self, sys_mon_t *mid, jlong ms);
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bool_t (*MonitorInUse)(sys_mon_t *mid);
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sys_thread_t * (*MonitorOwner)(sys_mon_t *mid);
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int (*MonitorGetInfo)(sys_mon_t *mid, sys_mon_info *info);
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} HPI_ThreadInterface;
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/*
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* files
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*/
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#define HPI_FILETYPE_REGULAR (0)
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#define HPI_FILETYPE_DIRECTORY (1)
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#define HPI_FILETYPE_OTHER (2)
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typedef struct {
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char * (*NativePath)(char *path);
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int (*FileType)(const char *path);
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int (*Open)(const char *name, int openMode, int filePerm);
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int (*Close)(int fd);
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jlong (*Seek)(int fd, jlong offset, int whence);
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int (*SetLength)(int fd, jlong length);
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int (*Sync)(int fd);
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int (*Available)(int fd, jlong *bytes);
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size_t (*Read)(int fd, void *buf, unsigned int nBytes);
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size_t (*Write)(int fd, const void *buf, unsigned int nBytes);
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int (*FileSizeFD)(int fd, jlong *size);
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} HPI_FileInterface;
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/*
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* sockets
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*/
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struct sockaddr;
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struct hostent;
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typedef struct {
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int (*Close)(int fd);
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long (*Available)(int fd, jint *pbytes);
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int (*Connect)(int fd, struct sockaddr *him, int len);
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int (*Accept)(int fd, struct sockaddr *him, int *len);
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int (*SendTo)(int fd, char *buf, int len, int flags,
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struct sockaddr *to, int tolen);
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int (*RecvFrom)(int fd, char *buf, int nbytes, int flags,
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struct sockaddr *from, int *fromlen);
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int (*Listen)(int fd, long count);
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int (*Recv)(int fd, char *buf, int nBytes, int flags);
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int (*Send)(int fd, char *buf, int nBytes, int flags);
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int (*Timeout)(int fd, long timeout);
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struct hostent * (*GetHostByName)(char *hostname);
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int (*Socket)(int domain, int type, int protocol);
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int (*SocketShutdown)(int fd, int howto);
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int (*Bind)(int fd, struct sockaddr *him, int len);
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int (*GetSocketName)(int fd, struct sockaddr *him, int *len);
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int (*GetHostName)(char *hostname, int namelen);
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struct hostent * (*GetHostByAddr)(const char *hostname, int len, int type);
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int (*SocketGetOption)(int fd, int level, int optname, char *optval, int *optlen);
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int (*SocketSetOption)(int fd, int level, int optname, const char *optval, int optlen);
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struct protoent * (*GetProtoByName)(char* name);
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} HPI_SocketInterface;
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/*
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* callbacks.
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*/
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typedef struct vm_calls {
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int (*jio_fprintf)(FILE *fp, const char *fmt, ...);
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void (*panic)(const char *fmt, ...);
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void (*monitorRegister)(sys_mon_t *mid, char *info_str);
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void (*monitorContendedEnter)(sys_thread_t *self, sys_mon_t *mid);
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void (*monitorContendedEntered)(sys_thread_t *self, sys_mon_t *mid);
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void (*monitorContendedExit)(sys_thread_t *self, sys_mon_t *mid);
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} vm_calls_t;
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#ifdef __cplusplus
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}
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#endif
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#endif /* !_JAVASOFT_HPI_H_ */
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