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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| 2 /* ***** BEGIN LICENSE BLOCK ***** |
| 3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| 4 * |
| 5 * The contents of this file are subject to the Mozilla Public License Version |
| 6 * 1.1 (the "License"); you may not use this file except in compliance with |
| 7 * the License. You may obtain a copy of the License at |
| 8 * http://www.mozilla.org/MPL/ |
| 9 * |
| 10 * Software distributed under the License is distributed on an "AS IS" basis, |
| 11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
| 12 * for the specific language governing rights and limitations under the |
| 13 * License. |
| 14 * |
| 15 * The Original Code is the Netscape Portable Runtime (NSPR). |
| 16 * |
| 17 * The Initial Developer of the Original Code is |
| 18 * Netscape Communications Corporation. |
| 19 * Portions created by the Initial Developer are Copyright (C) 1998-2000 |
| 20 * the Initial Developer. All Rights Reserved. |
| 21 * |
| 22 * Contributor(s): |
| 23 * |
| 24 * Alternatively, the contents of this file may be used under the terms of |
| 25 * either the GNU General Public License Version 2 or later (the "GPL"), or |
| 26 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
| 27 * in which case the provisions of the GPL or the LGPL are applicable instead |
| 28 * of those above. If you wish to allow use of your version of this file only |
| 29 * under the terms of either the GPL or the LGPL, and not to allow others to |
| 30 * use your version of this file under the terms of the MPL, indicate your |
| 31 * decision by deleting the provisions above and replace them with the notice |
| 32 * and other provisions required by the GPL or the LGPL. If you do not delete |
| 33 * the provisions above, a recipient may use your version of this file under |
| 34 * the terms of any one of the MPL, the GPL or the LGPL. |
| 35 * |
| 36 * ***** END LICENSE BLOCK ***** */ |
| 37 |
| 38 #ifndef prinit_h___ |
| 39 #define prinit_h___ |
| 40 |
| 41 #include "prthread.h" |
| 42 #include "prtypes.h" |
| 43 #include "prwin16.h" |
| 44 #include <stdio.h> |
| 45 |
| 46 PR_BEGIN_EXTERN_C |
| 47 |
| 48 /************************************************************************/ |
| 49 /**************************IDENTITY AND VERSIONING***********************/ |
| 50 /************************************************************************/ |
| 51 |
| 52 /* |
| 53 ** NSPR's name, this should persist until at least the turn of the |
| 54 ** century. |
| 55 */ |
| 56 #define PR_NAME "NSPR" |
| 57 |
| 58 /* |
| 59 ** NSPR's version is used to determine the likelihood that the version you |
| 60 ** used to build your component is anywhere close to being compatible with |
| 61 ** what is in the underlying library. |
| 62 ** |
| 63 ** The format of the version string is |
| 64 ** "<major version>.<minor version>[.<patch level>] [<Beta>]" |
| 65 */ |
| 66 #define PR_VERSION "4.6.1" |
| 67 #define PR_VMAJOR 4 |
| 68 #define PR_VMINOR 6 |
| 69 #define PR_VPATCH 1 |
| 70 #define PR_BETA PR_FALSE |
| 71 |
| 72 /* |
| 73 ** PRVersionCheck |
| 74 ** |
| 75 ** The basic signature of the function that is called to provide version |
| 76 ** checking. The result will be a boolean that indicates the likelihood |
| 77 ** that the underling library will perform as the caller expects. |
| 78 ** |
| 79 ** The only argument is a string, which should be the verson identifier |
| 80 ** of the library in question. That string will be compared against an |
| 81 ** equivalent string that represents the actual build version of the |
| 82 ** exporting library. |
| 83 ** |
| 84 ** The result will be the logical union of the directly called library |
| 85 ** and all dependent libraries. |
| 86 */ |
| 87 |
| 88 typedef PRBool (*PRVersionCheck)(const char*); |
| 89 |
| 90 /* |
| 91 ** PR_VersionCheck |
| 92 ** |
| 93 ** NSPR's existance proof of the version check function. |
| 94 ** |
| 95 ** Note that NSPR has no cooperating dependencies. |
| 96 */ |
| 97 |
| 98 NSPR_API(PRBool) PR_VersionCheck(const char *importedVersion); |
| 99 |
| 100 |
| 101 /************************************************************************/ |
| 102 /*******************************INITIALIZATION***************************/ |
| 103 /************************************************************************/ |
| 104 |
| 105 /* |
| 106 ** Initialize the runtime. Attach a thread object to the currently |
| 107 ** executing native thread of type "type". |
| 108 ** |
| 109 ** The specificaiton of 'maxPTDs' is ignored. |
| 110 */ |
| 111 NSPR_API(void) PR_Init( |
| 112 PRThreadType type, PRThreadPriority priority, PRUintn maxPTDs); |
| 113 |
| 114 /* |
| 115 ** And alternate form of initialization, one that may become the default if |
| 116 ** not the only mechanism, provides a method to get the NSPR runtime init- |
| 117 ** ialized and place NSPR between the caller and the runtime library. This |
| 118 ** allows main() to be treated as any other thread root function, signalling |
| 119 ** its compeletion by returning and allowing the runtime to coordinate the |
| 120 ** completion of the other threads of the runtime. |
| 121 ** |
| 122 ** The priority of the main (or primordial) thread will be PR_PRIORITY_NORMAL. |
| 123 ** The thread may adjust its own priority by using PR_SetPriority(), though |
| 124 ** at this time the support for priorities is somewhat weak. |
| 125 ** |
| 126 ** The specificaiton of 'maxPTDs' is ignored. |
| 127 ** |
| 128 ** The value returned by PR_Initialize is the value returned from the root |
| 129 ** function, 'prmain'. |
| 130 */ |
| 131 |
| 132 typedef PRIntn (PR_CALLBACK *PRPrimordialFn)(PRIntn argc, char **argv); |
| 133 |
| 134 NSPR_API(PRIntn) PR_Initialize( |
| 135 PRPrimordialFn prmain, PRIntn argc, char **argv, PRUintn maxPTDs); |
| 136 |
| 137 /* |
| 138 ** Return PR_TRUE if PR_Init has already been called. |
| 139 */ |
| 140 NSPR_API(PRBool) PR_Initialized(void); |
| 141 |
| 142 /* |
| 143 * Perform a graceful shutdown of NSPR. PR_Cleanup() may be called by |
| 144 * the primordial thread near the end of the main() function. |
| 145 * |
| 146 * PR_Cleanup() attempts to synchronize the natural termination of |
| 147 * process. It does that by blocking the caller, if and only if it is |
| 148 * the primordial thread, until the number of user threads has dropped |
| 149 * to zero. When the primordial thread returns from main(), the process |
| 150 * will immediately and silently exit. That is, it will (if necessary) |
| 151 * forcibly terminate any existing threads and exit without significant |
| 152 * blocking and there will be no error messages or core files. |
| 153 * |
| 154 * PR_Cleanup() returns PR_SUCCESS if NSPR is successfully shutdown, |
| 155 * or PR_FAILURE if the calling thread of this function is not the |
| 156 * primordial thread. |
| 157 */ |
| 158 NSPR_API(PRStatus) PR_Cleanup(void); |
| 159 |
| 160 /* |
| 161 ** Disable Interrupts |
| 162 ** Disables timer signals used for pre-emptive scheduling. |
| 163 */ |
| 164 NSPR_API(void) PR_DisableClockInterrupts(void); |
| 165 |
| 166 /* |
| 167 ** Enables Interrupts |
| 168 ** Enables timer signals used for pre-emptive scheduling. |
| 169 */ |
| 170 NSPR_API(void) PR_EnableClockInterrupts(void); |
| 171 |
| 172 /* |
| 173 ** Block Interrupts |
| 174 ** Blocks the timer signal used for pre-emptive scheduling |
| 175 */ |
| 176 NSPR_API(void) PR_BlockClockInterrupts(void); |
| 177 |
| 178 /* |
| 179 ** Unblock Interrupts |
| 180 ** Unblocks the timer signal used for pre-emptive scheduling |
| 181 */ |
| 182 NSPR_API(void) PR_UnblockClockInterrupts(void); |
| 183 |
| 184 /* |
| 185 ** Create extra virtual processor threads. Generally used with MP systems. |
| 186 */ |
| 187 NSPR_API(void) PR_SetConcurrency(PRUintn numCPUs); |
| 188 |
| 189 /* |
| 190 ** Control the method and size of the file descriptor (PRFileDesc*) |
| 191 ** cache used by the runtime. Setting 'high' to zero is for performance, |
| 192 ** any other value probably for debugging (see memo on FD caching). |
| 193 */ |
| 194 NSPR_API(PRStatus) PR_SetFDCacheSize(PRIntn low, PRIntn high); |
| 195 |
| 196 /* |
| 197 * Cause an immediate, nongraceful, forced termination of the process. |
| 198 * It takes a PRIntn argument, which is the exit status code of the |
| 199 * process. |
| 200 */ |
| 201 NSPR_API(void) PR_ProcessExit(PRIntn status); |
| 202 |
| 203 /* |
| 204 ** Abort the process in a non-graceful manner. This will cause a core file, |
| 205 ** call to the debugger or other moral equivalent as well as causing the |
| 206 ** entire process to stop. |
| 207 */ |
| 208 NSPR_API(void) PR_Abort(void); |
| 209 |
| 210 /* |
| 211 **************************************************************** |
| 212 * |
| 213 * Module initialization: |
| 214 * |
| 215 **************************************************************** |
| 216 */ |
| 217 |
| 218 typedef struct PRCallOnceType { |
| 219 PRIntn initialized; |
| 220 PRInt32 inProgress; |
| 221 PRStatus status; |
| 222 } PRCallOnceType; |
| 223 |
| 224 typedef PRStatus (PR_CALLBACK *PRCallOnceFN)(void); |
| 225 |
| 226 typedef PRStatus (PR_CALLBACK *PRCallOnceWithArgFN)(void *arg); |
| 227 |
| 228 NSPR_API(PRStatus) PR_CallOnce( |
| 229 PRCallOnceType *once, |
| 230 PRCallOnceFN func |
| 231 ); |
| 232 |
| 233 NSPR_API(PRStatus) PR_CallOnceWithArg( |
| 234 PRCallOnceType *once, |
| 235 PRCallOnceWithArgFN func, |
| 236 void *arg |
| 237 ); |
| 238 |
| 239 |
| 240 PR_END_EXTERN_C |
| 241 |
| 242 #endif /* prinit_h___ */ |
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