Delete bundled copy of NSS and replace with README.

nspr/pr/src/threads/prtpd.c

Index: nspr/pr/src/threads/prtpd.c
diff --git a/nspr/pr/src/threads/prtpd.c b/nspr/pr/src/threads/prtpd.c
deleted file mode 100644
index 0eb2a011c62ab3a2fbd16bebf425cb0b6a49e13a..0000000000000000000000000000000000000000
--- a/nspr/pr/src/threads/prtpd.c
+++ /dev/null
@@ -1,252 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/*
-** Thread Private Data
-**
-** There is an aribitrary limit on the number of keys that will be allocated
-** by the runtime. It's largish, so it is intended to be a sanity check, not
-** an impediment.
-**
-** There is a counter, initialized to zero and incremented every time a
-** client asks for a new key, that holds the high water mark for keys. All
-** threads logically have the same high water mark and are permitted to
-** ask for TPD up to that key value.
-**
-** The vector to hold the TPD are allocated when PR_SetThreadPrivate() is
-** called. The size of the vector will be some value greater than or equal
-** to the current high water mark. Each thread has its own TPD length and
-** vector.
-**
-** Threads that get private data for keys they have not set (or perhaps
-** don't even exist for that thread) get a NULL return. If the key is
-** beyond the high water mark, an error will be returned.
-*/
-
-/*
-** As of this time, BeOS has its own TPD implementation.  Integrating
-** this standard one is a TODO for anyone with a bit of spare time on
-** their hand.  For now, we just #ifdef out this whole file and use
-** the routines in pr/src/btthreads/
-*/
-
-#ifndef XP_BEOS
-
-#include "primpl.h"
-
-#include <string.h>
-
-#if defined(WIN95)
-/*
-** Some local variables report warnings on Win95 because the code paths 
-** using them are conditioned on HAVE_CUSTOME_USER_THREADS.
-** The pragma suppresses the warning.
-** 
-*/
-#pragma warning(disable : 4101)
-#endif
-
-#define _PR_TPD_LIMIT 128               /* arbitary limit on the TPD slots */
-static PRInt32 _pr_tpd_length = 0;      /* current length of destructor vector */
-static PRInt32 _pr_tpd_highwater = 0;   /* next TPD key to be assigned */
-static PRThreadPrivateDTOR *_pr_tpd_destructors = NULL;
-                                        /* the destructors are associated with
-                                            the keys, therefore asserting that
-                                            the TPD key depicts the data's 'type' */
-
-/*
-** Initialize the thread private data manipulation
-*/
-void _PR_InitTPD(void)
-{
-    _pr_tpd_destructors = (PRThreadPrivateDTOR*)
-        PR_CALLOC(_PR_TPD_LIMIT * sizeof(PRThreadPrivateDTOR*));
-    PR_ASSERT(NULL != _pr_tpd_destructors);
-    _pr_tpd_length = _PR_TPD_LIMIT;
-}
-
-/*
-** Clean up the thread private data manipulation
-*/
-void _PR_CleanupTPD(void)
-{
-}  /* _PR_CleanupTPD */
-
-/*
-** This routine returns a new index for per-thread-private data table. 
-** The index is visible to all threads within a process. This index can 
-** be used with the PR_SetThreadPrivate() and PR_GetThreadPrivate() routines 
-** to save and retrieve data associated with the index for a thread.
-**
-** The index independently maintains specific values for each binding thread. 
-** A thread can only get access to its own thread-specific-data.
-**
-** Upon a new index return the value associated with the index for all threads
-** is NULL, and upon thread creation the value associated with all indices for 
-** that thread is NULL. 
-**
-**     "dtor" is the destructor function to invoke when the private
-**       data is set or destroyed
-**
-** Returns PR_FAILURE if the total number of indices will exceed the maximun 
-** allowed.
-*/
-
-PR_IMPLEMENT(PRStatus) PR_NewThreadPrivateIndex(
-    PRUintn *newIndex, PRThreadPrivateDTOR dtor)
-{
-    PRStatus rv;
-    PRInt32 index;
-
-    if (!_pr_initialized) _PR_ImplicitInitialization();
-
-    PR_ASSERT(NULL != newIndex);
-    PR_ASSERT(NULL != _pr_tpd_destructors);
-
-    index = PR_ATOMIC_INCREMENT(&_pr_tpd_highwater) - 1;  /* allocate index */
-    if (_PR_TPD_LIMIT <= index)
-    {
-        PR_SetError(PR_TPD_RANGE_ERROR, 0);
-        rv = PR_FAILURE;  /* that's just wrong */
-    }
-    else
-    {
-        _pr_tpd_destructors[index] = dtor;  /* record destructor @index */
-        *newIndex = (PRUintn)index;  /* copy into client's location */
-        rv = PR_SUCCESS;  /* that's okay */
-    }
-
-    return rv;
-}
-
-/*
-** Define some per-thread-private data.
-**     "index" is an index into the per-thread private data table
-**     "priv" is the per-thread-private data 
-**
-** If the per-thread private data table has a previously registered
-** destructor function and a non-NULL per-thread-private data value,
-** the destructor function is invoked.
-**
-** This can return PR_FAILURE if index is invalid (ie., beyond the limit
-** on the TPD slots) or memory is insufficient to allocate an expanded
-** vector.
-*/
-
-PR_IMPLEMENT(PRStatus) PR_SetThreadPrivate(PRUintn index, void *priv)
-{
-    PRThread *self = PR_GetCurrentThread();
-
-    /*
-    ** To improve performance, we don't check if the index has been
-    ** allocated.
-    */
-    if (index >= _PR_TPD_LIMIT)
-    {
-        PR_SetError(PR_TPD_RANGE_ERROR, 0);
-        return PR_FAILURE;
-    }
-
-    PR_ASSERT(((NULL == self->privateData) && (0 == self->tpdLength))
-        || ((NULL != self->privateData) && (0 != self->tpdLength)));
-
-    /*
-    ** If this thread does not have a sufficient vector for the index
-    ** being set, go ahead and extend this vector now.
-    */
-    if ((NULL == self->privateData) || (self->tpdLength <= index))
-    {
-        void *extension = PR_CALLOC(_pr_tpd_length * sizeof(void*));
-        if (NULL == extension)
-        {
-            PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
-            return PR_FAILURE;
-        }
-        if (self->privateData) {
-            (void)memcpy(
-                extension, self->privateData,
-                self->tpdLength * sizeof(void*));
-            PR_DELETE(self->privateData);
-        }
-        self->tpdLength = _pr_tpd_length;
-        self->privateData = (void**)extension;
-    }
-    /*
-    ** There wasn't much chance of having to call the destructor
-    ** unless the slot already existed.
-    */
-    else if (self->privateData[index] && _pr_tpd_destructors[index])
-    {
-        void *data = self->privateData[index];
-        self->privateData[index] = NULL;
-        (*_pr_tpd_destructors[index])(data);
-    }
-
-    PR_ASSERT(index < self->tpdLength);
-    self->privateData[index] = priv;
-
-    return PR_SUCCESS;
-}
-
-/*
-** Recover the per-thread-private data for the current thread. "index" is
-** the index into the per-thread private data table. 
-**
-** The returned value may be NULL which is indistinguishable from an error 
-** condition.
-**
-*/
-
-PR_IMPLEMENT(void*) PR_GetThreadPrivate(PRUintn index)
-{
-    PRThread *self = PR_GetCurrentThread();
-    void *tpd = ((NULL == self->privateData) || (index >= self->tpdLength)) ?
-        NULL : self->privateData[index];
-
-    return tpd;
-}
-
-/*
-** Destroy the thread's private data, if any exists. This is called at
-** thread termination time only. There should be no threading issues
-** since this is being called by the thread itself.
-*/
-void _PR_DestroyThreadPrivate(PRThread* self)
-{
-#define _PR_TPD_DESTRUCTOR_ITERATIONS 4
-
-    if (NULL != self->privateData)  /* we have some */
-    {
-        PRBool clean;
-        PRUint32 index;
-        PRInt32 passes = _PR_TPD_DESTRUCTOR_ITERATIONS;
-        PR_ASSERT(0 != self->tpdLength);
-        do
-        {
-            clean = PR_TRUE;
-            for (index = 0; index < self->tpdLength; ++index)
-            {
-                void *priv = self->privateData[index];  /* extract */
-                if (NULL != priv)  /* we have data at this index */
-                {
-                    if (NULL != _pr_tpd_destructors[index])
-                    {
-                        self->privateData[index] = NULL;  /* precondition */
-                        (*_pr_tpd_destructors[index])(priv);  /* destroy */
-                        clean = PR_FALSE;  /* unknown side effects */
-                    }
-                }
-            }
-        } while ((--passes > 0) && !clean);  /* limit # of passes */
-        /*
-        ** We give up after a fixed number of passes. Any non-NULL
-        ** thread-private data value with a registered destructor
-        ** function is not destroyed.
-        */
-        memset(self->privateData, 0, self->tpdLength * sizeof(void*));
-    }
-}  /* _PR_DestroyThreadPrivate */
-
-#endif /* !XP_BEOS */