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Diffstat (limited to 'Build/source/libs/gd/libgd-src/netware/nwlibc.c')
-rw-r--r--Build/source/libs/gd/libgd-src/netware/nwlibc.c290
1 files changed, 290 insertions, 0 deletions
diff --git a/Build/source/libs/gd/libgd-src/netware/nwlibc.c b/Build/source/libs/gd/libgd-src/netware/nwlibc.c
new file mode 100644
index 00000000000..b981a554773
--- /dev/null
+++ b/Build/source/libs/gd/libgd-src/netware/nwlibc.c
@@ -0,0 +1,290 @@
+/*********************************************************************
+ * Universal NetWare library stub. *
+ * written by Ulrich Neuman and given to OpenSource copyright-free. *
+ * version: 1.0 *
+ * $Id$
+ *********************************************************************/
+
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <library.h>
+#include <netware.h>
+#include <screen.h>
+#include <nks/thread.h>
+#include <nks/synch.h>
+
+
+typedef struct {
+ int _errno;
+ void *twentybytes;
+} libthreaddata_t;
+
+typedef struct {
+ int x;
+ int y;
+ int z;
+ void *tenbytes;
+ NXKey_t perthreadkey; /* if -1, no key obtained... */
+ NXMutex_t *lock;
+} libdata_t;
+
+int gLibId = -1;
+void *gLibHandle = (void *) NULL;
+rtag_t gAllocTag = (rtag_t) NULL;
+NXMutex_t *gLibLock = (NXMutex_t *) NULL;
+
+/* internal library function prototypes... */
+int DisposeLibraryData ( void * );
+void DisposeThreadData ( void * );
+int GetOrSetUpData ( int id, libdata_t **data, libthreaddata_t **threaddata );
+
+
+int _NonAppStart
+(
+ void *NLMHandle,
+ void *errorScreen,
+ const char *cmdLine,
+ const char *loadDirPath,
+ size_t uninitializedDataLength,
+ void *NLMFileHandle,
+ int (*readRoutineP)( int conn, void *fileHandle, size_t offset,
+ size_t nbytes, size_t *bytesRead, void *buffer ),
+ size_t customDataOffset,
+ size_t customDataSize,
+ int messageCount,
+ const char **messages
+)
+{
+ NX_LOCK_INFO_ALLOC(liblock, "Per-Application Data Lock", 0);
+
+#ifndef __GNUC__
+#pragma unused(cmdLine)
+#pragma unused(loadDirPath)
+#pragma unused(uninitializedDataLength)
+#pragma unused(NLMFileHandle)
+#pragma unused(readRoutineP)
+#pragma unused(customDataOffset)
+#pragma unused(customDataSize)
+#pragma unused(messageCount)
+#pragma unused(messages)
+#endif
+
+ /*
+ ** Here we process our command line, post errors (to the error screen),
+ ** perform initializations and anything else we need to do before being able
+ ** to accept calls into us. If we succeed, we return non-zero and the NetWare
+ ** Loader will leave us up, otherwise we fail to load and get dumped.
+ */
+ gAllocTag = AllocateResourceTag(NLMHandle,
+ "<library-name> memory allocations", AllocSignature);
+
+ if (!gAllocTag) {
+ OutputToScreen(errorScreen, "Unable to allocate resource tag for "
+ "library memory allocations.\n");
+ return -1;
+ }
+
+ gLibId = register_library(DisposeLibraryData);
+
+ if (gLibId < -1) {
+ OutputToScreen(errorScreen, "Unable to register library with kernel.\n");
+ return -1;
+ }
+
+ gLibHandle = NLMHandle;
+
+ gLibLock = NXMutexAlloc(0, 0, &liblock);
+
+ if (!gLibLock) {
+ OutputToScreen(errorScreen, "Unable to allocate library data lock.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+** Here we clean up any resources we allocated. Resource tags is a big part
+** of what we created, but NetWare doesn't ask us to free those.
+*/
+void _NonAppStop( void )
+{
+ (void) unregister_library(gLibId);
+ NXMutexFree(gLibLock);
+}
+
+/*
+** This function cannot be the first in the file for if the file is linked
+** first, then the check-unload function's offset will be nlmname.nlm+0
+** which is how to tell that there isn't one. When the check function is
+** first in the linked objects, it is ambiguous. For this reason, we will
+** put it inside this file after the stop function.
+**
+** Here we check to see if it's alright to ourselves to be unloaded. If not,
+** we return a non-zero value. Right now, there isn't any reason not to allow
+** it.
+*/
+int _NonAppCheckUnload( void )
+{
+ return 0;
+}
+
+int GetOrSetUpData
+(
+ int id,
+ libdata_t **appData,
+ libthreaddata_t **threadData
+)
+{
+ int err;
+ libdata_t *app_data;
+ libthreaddata_t *thread_data;
+ NXKey_t key;
+ NX_LOCK_INFO_ALLOC(liblock, "Application Data Lock", 0);
+
+ err = 0;
+ thread_data = (libthreaddata_t *) NULL;
+
+ /*
+ ** Attempt to get our data for the application calling us. This is where we
+ ** store whatever application-specific information we need to carry in support
+ ** of calling applications.
+ */
+ app_data = (libdata_t *) get_app_data(id);
+
+ if (!app_data) {
+ /*
+ ** This application hasn't called us before; set up application AND per-thread
+ ** data. Of course, just in case a thread from this same application is calling
+ ** us simultaneously, we better lock our application data-creation mutex. We
+ ** also need to recheck for data after we acquire the lock because WE might be
+ ** that other thread that was too late to create the data and the first thread
+ ** in will have created it.
+ */
+ NXLock(gLibLock);
+
+ if (!(app_data = (libdata_t *) get_app_data(id))) {
+ app_data = (libdata_t *) malloc(sizeof(libdata_t));
+
+ if (app_data) {
+ memset(app_data, 0, sizeof(libdata_t));
+
+ app_data->tenbytes = malloc(10);
+ app_data->lock = NXMutexAlloc(0, 0, &liblock);
+
+ if (!app_data->tenbytes || !app_data->lock) {
+ if (app_data->lock)
+ NXMutexFree(app_data->lock);
+
+ free(app_data);
+ app_data = (libdata_t *) NULL;
+ err = ENOMEM;
+ }
+
+ if (app_data) {
+ /*
+ ** Here we burn in the application data that we were trying to get by calling
+ ** get_app_data(). Next time we call the first function, we'll get this data
+ ** we're just now setting. We also go on here to establish the per-thread data
+ ** for the calling thread, something we'll have to do on each application
+ ** thread the first time it calls us.
+ */
+ err = set_app_data(gLibId, app_data);
+
+ if (err) {
+ free(app_data);
+ app_data = (libdata_t *) NULL;
+ err = ENOMEM;
+ } else {
+ /* create key for thread-specific data... */
+ err = NXKeyCreate(DisposeThreadData, (void *) NULL, &key);
+
+ if (err) /* (no more keys left?) */
+ key = -1;
+
+ app_data->perthreadkey = key;
+ }
+ }
+ }
+ }
+
+ NXUnlock(gLibLock);
+ }
+
+ if (app_data) {
+ key = app_data->perthreadkey;
+
+ if ( key != -1 /* couldn't create a key? no thread data */
+ && !(err = NXKeyGetValue(key, (void **) &thread_data))
+ && !thread_data) {
+ /*
+ ** Allocate the per-thread data for the calling thread. Regardless of whether
+ ** there was already application data or not, this may be the first call by a
+ ** a new thread. The fact that we allocation 20 bytes on a pointer is not very
+ ** important, this just helps to demonstrate that we can have arbitrarily
+ ** complex per-thread data.
+ */
+ thread_data = (libthreaddata_t *) malloc(sizeof(libthreaddata_t));
+
+ if (thread_data) {
+ thread_data->_errno = 0;
+ thread_data->twentybytes = malloc(20);
+
+ if (!thread_data->twentybytes) {
+ free(thread_data);
+ thread_data = (libthreaddata_t *) NULL;
+ err = ENOMEM;
+ }
+
+ if ((err = NXKeySetValue(key, thread_data))) {
+ free(thread_data->twentybytes);
+ free(thread_data);
+ thread_data = (libthreaddata_t *) NULL;
+ }
+ }
+ }
+ }
+
+ if (appData)
+ *appData = app_data;
+
+ if (threadData)
+ *threadData = thread_data;
+
+ return err;
+}
+
+int DisposeLibraryData
+(
+ void *data
+)
+{
+ if (data) {
+ void *tenbytes = ((libdata_t *) data)->tenbytes;
+
+ if (tenbytes)
+ free(tenbytes);
+
+ free(data);
+ }
+
+ return 0;
+}
+
+void DisposeThreadData
+(
+ void *data
+)
+{
+ if (data) {
+ void *twentybytes = ((libthreaddata_t *) data)->twentybytes;
+
+ if (twentybytes)
+ free(twentybytes);
+
+ free(data);
+ }
+}
+
+