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172 lines
4.2 KiB
C
172 lines
4.2 KiB
C
/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the Netscape security libraries.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1994-2000 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU General Public License Version 2 or later (the
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* "GPL"), in which case the provisions of the GPL are applicable
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* instead of those above. If you wish to allow use of your
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* version of this file only under the terms of the GPL and not to
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* allow others to use your version of this file under the MPL,
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* indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by
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* the GPL. If you do not delete the provisions above, a recipient
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* may use your version of this file under either the MPL or the
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* GPL.
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*/
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#ifdef DEBUG
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static const char CVS_ID[] = "@(#) $RCSfile: whatnspr.c,v $ $Revision: 1.2 $ $Date: 2002/01/31 19:18:55 $ $Name: $";
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#endif /* DEBUG */
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#ifndef BASE_H
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#include "base.h"
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#endif /* BASE_H */
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/*
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* This file isolates us from differences in NSPR versions.
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* We have to detect the library with which we're running at
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* runtime, and switch behaviours there. This lets us do
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* stuff like load cryptoki modules in Communicator.
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*
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* Hey, it's the PORT layer all over again!
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*/
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static int whatnspr = 0;
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static int
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set_whatnspr
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(
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void
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)
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{
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/*
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* The only runtime difference I could find was the
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* return value of PR_dtoa. We can't just look for
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* a symbol in NSPR >=2, because it'll always be
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* found (because we compile against NSPR >=2).
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* Maybe we could look for a symbol merely in NSPR 1?
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*
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*/
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char buffer[64];
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int decpt = 0, sign = 0;
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char *rve = (char *)0;
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/* extern int PR_dtoa(double, int, int, int *, int *, char **, char *, int); */
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int r = (int)PR_dtoa((double)1.0, 0, 5, &decpt, &sign, &rve,
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buffer, sizeof(buffer));
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switch( r ) {
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case 0:
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case -1:
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whatnspr = 2;
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/*
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* If we needed to, *now* we could look up "libVersionPoint"
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* and get more data there.. except all current NSPR's (up
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* to NSPR 4.x at time of writing) still say 2 in their
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* version structure.
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*/
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break;
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default:
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whatnspr = 1;
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break;
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}
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return whatnspr;
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}
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#define WHATNSPR (whatnspr ? whatnspr : set_whatnspr())
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NSS_IMPLEMENT PRStatus
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nss_NewThreadPrivateIndex
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(
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PRUintn *ip,
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PRThreadPrivateDTOR dtor
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)
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{
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switch( WHATNSPR ) {
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case 1:
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{
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PRLibrary *l = (PRLibrary *)0;
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void *f = PR_FindSymbolAndLibrary("PR_NewThreadPrivateID", &l);
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typedef PRInt32 (*ntpt)(void);
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ntpt ntp = (ntpt) f;
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PR_ASSERT((void *)0 != f);
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*ip = ntp();
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return PR_SUCCESS;
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}
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case 2:
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default:
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return PR_NewThreadPrivateIndex(ip, dtor);
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}
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}
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NSS_IMPLEMENT void *
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nss_GetThreadPrivate
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(
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PRUintn i
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)
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{
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switch( WHATNSPR ) {
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case 1:
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{
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PRLibrary *l = (PRLibrary *)0;
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void *f = PR_FindSymbolAndLibrary("PR_GetThreadPrivate", &l);
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typedef void *(*gtpt)(PRThread *, PRInt32);
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gtpt gtp = (gtpt) f;
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PR_ASSERT((void *)0 != f);
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return gtp(PR_CurrentThread(), i);
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}
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case 2:
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default:
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return PR_GetThreadPrivate(i);
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}
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}
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NSS_IMPLEMENT void
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nss_SetThreadPrivate
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(
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PRUintn i,
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void *v
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)
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{
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switch( WHATNSPR ) {
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case 1:
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{
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PRLibrary *l = (PRLibrary *)0;
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void *f = PR_FindSymbolAndLibrary("PR_SetThreadPrivate", &l);
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typedef PRStatus (*stpt)(PRThread *, PRInt32, void *);
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stpt stp = (stpt) f;
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PR_ASSERT((void *)0 != f);
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(void)stp(PR_CurrentThread(), i, v);
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return;
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}
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case 2:
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default:
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(void)PR_SetThreadPrivate(i, v);
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return;
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}
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}
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