зеркало из https://github.com/mozilla/gecko-dev.git
216 строки
6.4 KiB
C
216 строки
6.4 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef prinit_h___
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#define prinit_h___
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#include "prthread.h"
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#include "prtypes.h"
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#include "prwin16.h"
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#include <stdio.h>
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PR_BEGIN_EXTERN_C
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/************************************************************************/
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/**************************IDENTITY AND VERSIONING***********************/
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/************************************************************************/
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/*
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** NSPR's name, this should persist until at least the turn of the
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** century.
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*/
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#define PR_NAME "NSPR"
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/*
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** NSPR's version is used to determine the likelihood that the version you
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** used to build your component is anywhere close to being compatible with
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** what is in the underlying library.
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**
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** The format of the version string is
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** "<major version>.<minor version>[.<patch level>] [<Beta>]"
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*/
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#define PR_VERSION "4.25"
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#define PR_VMAJOR 4
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#define PR_VMINOR 25
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#define PR_VPATCH 0
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#define PR_BETA PR_FALSE
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/*
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** PRVersionCheck
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**
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** The basic signature of the function that is called to provide version
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** checking. The result will be a boolean that indicates the likelihood
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** that the underling library will perform as the caller expects.
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**
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** The only argument is a string, which should be the verson identifier
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** of the library in question. That string will be compared against an
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** equivalent string that represents the actual build version of the
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** exporting library.
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**
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** The result will be the logical union of the directly called library
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** and all dependent libraries.
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*/
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typedef PRBool (*PRVersionCheck)(const char*);
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/*
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** PR_VersionCheck
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**
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** NSPR's existance proof of the version check function.
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**
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** Note that NSPR has no cooperating dependencies.
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*/
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NSPR_API(PRBool) PR_VersionCheck(const char *importedVersion);
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/*
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* Returns a const string of the NSPR library version.
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*/
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NSPR_API(const char*) PR_GetVersion(void);
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/************************************************************************/
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/*******************************INITIALIZATION***************************/
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/************************************************************************/
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/*
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** Initialize the runtime. Attach a thread object to the currently
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** executing native thread of type "type".
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**
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** The specificaiton of 'maxPTDs' is ignored.
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*/
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NSPR_API(void) PR_Init(
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PRThreadType type, PRThreadPriority priority, PRUintn maxPTDs);
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/*
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** And alternate form of initialization, one that may become the default if
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** not the only mechanism, provides a method to get the NSPR runtime init-
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** ialized and place NSPR between the caller and the runtime library. This
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** allows main() to be treated as any other thread root function, signalling
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** its compeletion by returning and allowing the runtime to coordinate the
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** completion of the other threads of the runtime.
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**
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** The priority of the main (or primordial) thread will be PR_PRIORITY_NORMAL.
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** The thread may adjust its own priority by using PR_SetPriority(), though
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** at this time the support for priorities is somewhat weak.
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**
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** The specificaiton of 'maxPTDs' is ignored.
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**
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** The value returned by PR_Initialize is the value returned from the root
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** function, 'prmain'.
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*/
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typedef PRIntn (PR_CALLBACK *PRPrimordialFn)(PRIntn argc, char **argv);
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NSPR_API(PRIntn) PR_Initialize(
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PRPrimordialFn prmain, PRIntn argc, char **argv, PRUintn maxPTDs);
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/*
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** Return PR_TRUE if PR_Init has already been called.
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*/
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NSPR_API(PRBool) PR_Initialized(void);
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/*
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* Perform a graceful shutdown of NSPR. PR_Cleanup() may be called by
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* the primordial thread near the end of the main() function.
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*
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* PR_Cleanup() attempts to synchronize the natural termination of
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* process. It does that by blocking the caller, if and only if it is
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* the primordial thread, until the number of user threads has dropped
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* to zero. When the primordial thread returns from main(), the process
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* will immediately and silently exit. That is, it will (if necessary)
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* forcibly terminate any existing threads and exit without significant
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* blocking and there will be no error messages or core files.
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*
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* PR_Cleanup() returns PR_SUCCESS if NSPR is successfully shutdown,
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* or PR_FAILURE if the calling thread of this function is not the
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* primordial thread.
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*/
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NSPR_API(PRStatus) PR_Cleanup(void);
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/*
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** Disable Interrupts
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** Disables timer signals used for pre-emptive scheduling.
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*/
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NSPR_API(void) PR_DisableClockInterrupts(void);
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/*
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** Enables Interrupts
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** Enables timer signals used for pre-emptive scheduling.
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*/
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NSPR_API(void) PR_EnableClockInterrupts(void);
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/*
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** Block Interrupts
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** Blocks the timer signal used for pre-emptive scheduling
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*/
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NSPR_API(void) PR_BlockClockInterrupts(void);
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/*
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** Unblock Interrupts
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** Unblocks the timer signal used for pre-emptive scheduling
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*/
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NSPR_API(void) PR_UnblockClockInterrupts(void);
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/*
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** Create extra virtual processor threads. Generally used with MP systems.
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*/
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NSPR_API(void) PR_SetConcurrency(PRUintn numCPUs);
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/*
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** Control the method and size of the file descriptor (PRFileDesc*)
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** cache used by the runtime. Setting 'high' to zero is for performance,
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** any other value probably for debugging (see memo on FD caching).
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*/
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NSPR_API(PRStatus) PR_SetFDCacheSize(PRIntn low, PRIntn high);
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/*
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* Cause an immediate, nongraceful, forced termination of the process.
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* It takes a PRIntn argument, which is the exit status code of the
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* process.
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*/
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NSPR_API(void) PR_ProcessExit(PRIntn status);
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/*
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** Abort the process in a non-graceful manner. This will cause a core file,
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** call to the debugger or other moral equivalent as well as causing the
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** entire process to stop.
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*/
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NSPR_API(void) PR_Abort(void);
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/*
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****************************************************************
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*
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* Module initialization:
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*
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****************************************************************
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*/
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typedef struct PRCallOnceType {
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PRIntn initialized;
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PRInt32 inProgress;
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PRStatus status;
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} PRCallOnceType;
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typedef PRStatus (PR_CALLBACK *PRCallOnceFN)(void);
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typedef PRStatus (PR_CALLBACK *PRCallOnceWithArgFN)(void *arg);
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NSPR_API(PRStatus) PR_CallOnce(
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PRCallOnceType *once,
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PRCallOnceFN func
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);
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NSPR_API(PRStatus) PR_CallOnceWithArg(
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PRCallOnceType *once,
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PRCallOnceWithArgFN func,
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void *arg
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);
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PR_END_EXTERN_C
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#endif /* prinit_h___ */
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