1
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
3
* The contents of this file are subject to the Mozilla Public
4
* License Version 1.1 (the "License"); you may not use this file
5
* except in compliance with the License. You may obtain a copy of
6
* the License at http://www.mozilla.org/MPL/
8
* Software distributed under the License is distributed on an "AS
9
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
10
* implied. See the License for the specific language governing
11
* rights and limitations under the License.
13
* The Original Code is the Netscape Portable Runtime (NSPR).
15
* The Initial Developer of the Original Code is Netscape
16
* Communications Corporation. Portions created by Netscape are
17
* Copyright (C) 1998-2000 Netscape Communications Corporation. All
22
* Alternatively, the contents of this file may be used under the
23
* terms of the GNU General Public License Version 2 or later (the
24
* "GPL"), in which case the provisions of the GPL are applicable
25
* instead of those above. If you wish to allow use of your
26
* version of this file only under the terms of the GPL and not to
27
* allow others to use your version of this file under the MPL,
28
* indicate your decision by deleting the provisions above and
29
* replace them with the notice and other provisions required by
30
* the GPL. If you do not delete the provisions above, a recipient
31
* may use your version of this file under either the MPL or the
45
/************************************************************************/
46
/**************************IDENTITY AND VERSIONING***********************/
47
/************************************************************************/
50
** NSPR's name, this should persist until at least the turn of the
53
#define PR_NAME "NSPR"
56
** NSPR's version is used to determine the likelihood that the version you
57
** used to build your component is anywhere close to being compatible with
58
** what is in the underlying library.
60
** The format of the version string is
61
** "<major version>.<minor version>[.<patch level>] [<Beta>]"
63
#define PR_VERSION "4.5 Beta"
67
#define PR_BETA PR_TRUE
72
** The basic signature of the function that is called to provide version
73
** checking. The result will be a boolean that indicates the likelihood
74
** that the underling library will perform as the caller expects.
76
** The only argument is a string, which should be the verson identifier
77
** of the library in question. That string will be compared against an
78
** equivalent string that represents the actual build version of the
81
** The result will be the logical union of the directly called library
82
** and all dependent libraries.
85
typedef PRBool (*PRVersionCheck)(const char*);
90
** NSPR's existance proof of the version check function.
92
** Note that NSPR has no cooperating dependencies.
95
NSPR_API(PRBool) PR_VersionCheck(const char *importedVersion);
98
/************************************************************************/
99
/*******************************INITIALIZATION***************************/
100
/************************************************************************/
103
** Initialize the runtime. Attach a thread object to the currently
104
** executing native thread of type "type".
106
** The specificaiton of 'maxPTDs' is ignored.
108
NSPR_API(void) PR_Init(
109
PRThreadType type, PRThreadPriority priority, PRUintn maxPTDs);
112
** And alternate form of initialization, one that may become the default if
113
** not the only mechanism, provides a method to get the NSPR runtime init-
114
** ialized and place NSPR between the caller and the runtime library. This
115
** allows main() to be treated as any other thread root function, signalling
116
** its compeletion by returning and allowing the runtime to coordinate the
117
** completion of the other threads of the runtime.
119
** The priority of the main (or primordial) thread will be PR_PRIORITY_NORMAL.
120
** The thread may adjust its own priority by using PR_SetPriority(), though
121
** at this time the support for priorities is somewhat weak.
123
** The specificaiton of 'maxPTDs' is ignored.
125
** The value returned by PR_Initialize is the value returned from the root
126
** function, 'prmain'.
129
typedef PRIntn (PR_CALLBACK *PRPrimordialFn)(PRIntn argc, char **argv);
131
NSPR_API(PRIntn) PR_Initialize(
132
PRPrimordialFn prmain, PRIntn argc, char **argv, PRUintn maxPTDs);
135
** Return PR_TRUE if PR_Init has already been called.
137
NSPR_API(PRBool) PR_Initialized(void);
140
* Perform a graceful shutdown of NSPR. PR_Cleanup() may be called by
141
* the primordial thread near the end of the main() function.
143
* PR_Cleanup() attempts to synchronize the natural termination of
144
* process. It does that by blocking the caller, if and only if it is
145
* the primordial thread, until the number of user threads has dropped
146
* to zero. When the primordial thread returns from main(), the process
147
* will immediately and silently exit. That is, it will (if necessary)
148
* forcibly terminate any existing threads and exit without significant
149
* blocking and there will be no error messages or core files.
151
* PR_Cleanup() returns PR_SUCCESS if NSPR is successfully shutdown,
152
* or PR_FAILURE if the calling thread of this function is not the
155
NSPR_API(PRStatus) PR_Cleanup(void);
158
** Disable Interrupts
159
** Disables timer signals used for pre-emptive scheduling.
161
NSPR_API(void) PR_DisableClockInterrupts(void);
164
** Enables Interrupts
165
** Enables timer signals used for pre-emptive scheduling.
167
NSPR_API(void) PR_EnableClockInterrupts(void);
171
** Blocks the timer signal used for pre-emptive scheduling
173
NSPR_API(void) PR_BlockClockInterrupts(void);
176
** Unblock Interrupts
177
** Unblocks the timer signal used for pre-emptive scheduling
179
NSPR_API(void) PR_UnblockClockInterrupts(void);
182
** Create extra virtual processor threads. Generally used with MP systems.
184
NSPR_API(void) PR_SetConcurrency(PRUintn numCPUs);
187
** Control the method and size of the file descriptor (PRFileDesc*)
188
** cache used by the runtime. Setting 'high' to zero is for performance,
189
** any other value probably for debugging (see memo on FD caching).
191
NSPR_API(PRStatus) PR_SetFDCacheSize(PRIntn low, PRIntn high);
194
* Cause an immediate, nongraceful, forced termination of the process.
195
* It takes a PRIntn argument, which is the exit status code of the
198
NSPR_API(void) PR_ProcessExit(PRIntn status);
201
** Abort the process in a non-graceful manner. This will cause a core file,
202
** call to the debugger or other moral equivalent as well as causing the
203
** entire process to stop.
205
NSPR_API(void) PR_Abort(void);
208
****************************************************************
210
* Module initialization:
212
****************************************************************
215
typedef struct PRCallOnceType {
221
typedef PRStatus (PR_CALLBACK *PRCallOnceFN)(void);
223
typedef PRStatus (PR_CALLBACK *PRCallOnceWithArgFN)(void *arg);
225
NSPR_API(PRStatus) PR_CallOnce(
226
PRCallOnceType *once,
230
NSPR_API(PRStatus) PR_CallOnceWithArg(
231
PRCallOnceType *once,
232
PRCallOnceWithArgFN func,
239
#endif /* prinit_h___ */