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author | marha <marha@users.sourceforge.net> | 2010-05-16 20:50:58 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2010-05-16 20:50:58 +0000 |
commit | 1c94119ae26b94a60bb2c2b33494ed43c3b8a52f (patch) | |
tree | cfe0c736c95314edac7d9f1065be9c13026ed0c1 /xorg-server/include/privates.h | |
parent | 6b29aa4559aeb6f795caee047561654bfa0a1954 (diff) | |
download | vcxsrv-1c94119ae26b94a60bb2c2b33494ed43c3b8a52f.tar.gz vcxsrv-1c94119ae26b94a60bb2c2b33494ed43c3b8a52f.tar.bz2 vcxsrv-1c94119ae26b94a60bb2c2b33494ed43c3b8a52f.zip |
svn merge -r588:HEAD ^/branches/released .
Diffstat (limited to 'xorg-server/include/privates.h')
-rw-r--r-- | xorg-server/include/privates.h | 298 |
1 files changed, 136 insertions, 162 deletions
diff --git a/xorg-server/include/privates.h b/xorg-server/include/privates.h index e6f788de1..cbb08887f 100644 --- a/xorg-server/include/privates.h +++ b/xorg-server/include/privates.h @@ -1,162 +1,136 @@ -/*********************************************************** - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN -AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN -CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - -******************************************************************/ - -#ifndef PRIVATES_H -#define PRIVATES_H 1 - -#include "dix.h" -#include "resource.h" - -/***************************************************************** - * STUFF FOR PRIVATES - *****************************************************************/ - -typedef int *DevPrivateKey; -struct _Private; -typedef struct _Private PrivateRec; - -/* - * Request pre-allocated private space for your driver/module. This function - * increases the amount of space allocated automatically when dixLookupPrivate - * is called on a PrivateRec that does not yet have a value associated with - * 'key'. - * - * This function will only increase the reserved size: if a size was previously - * requested, then dixRequestPrivate causes later calls to dixLookupPrivate to - * allocate the maximum of the old size and 'size'. Requested sizes are reset - * to 0 by dixResetPrivates, which is called before each server generation. - * - * If dixRequestPrivate is not called with a nonzero size for 'key', then the - * module responsible for 'key' must manage the associated pointer itself with - * dixSetPrivate. - * - * dixRequestPrivate returns FALSE if it cannot store the requested size. - */ -extern _X_EXPORT int -dixRequestPrivate(const DevPrivateKey key, unsigned size); - -/* - * Allocates space for an association of 'key' with a value in 'privates'. - * - * If a nonzero size was requested with dixRequestPrivate, then - * dixAllocatePrivate also allocates the requested amount of memory and - * associates the pointer to that memory with 'key' in 'privates'. The - * allocated memory is initialized to zero. This memory can only be freed by - * dixFreePrivates. - * - * If dixRequestPrivate was never called with a nonzero size, then - * dixAllocatePrivate associates NULL with 'key' in 'privates'. - * - * dixAllocatePrivate returns a pointer to the value associated with 'key' in - * 'privates', unless a memory allocation fails, in which case it returns NULL. - */ -extern _X_EXPORT pointer * -dixAllocatePrivate(PrivateRec **privates, const DevPrivateKey key); - -/* - * Look up a private pointer. - * - * If no value is currently associated with 'key' in 'privates', then - * dixLookupPrivate calls dixAllocatePrivate and returns the resulting - * associated value. - * - * dixLookupPrivate returns NULL if a memory allocation fails. - */ -extern _X_EXPORT pointer -dixLookupPrivate(PrivateRec **privates, const DevPrivateKey key); - -/* - * Look up the address of a private pointer. If 'key' is not associated with a - * value in 'privates', then dixLookupPrivateAddr calls dixAllocatePrivate and - * returns a pointer to the resulting associated value. - * - * dixLookupPrivateAddr returns NULL if 'key' was not previously associated in - * 'privates' and a memory allocation fails. - */ -extern _X_EXPORT pointer * -dixLookupPrivateAddr(PrivateRec **privates, const DevPrivateKey key); - -/* - * Associate 'val' with 'key' in 'privates' so that later calls to - * dixLookupPrivate(privates, key) will return 'val'. - * - * dixSetPrivate returns FALSE if a memory allocation fails. - */ -extern _X_EXPORT int -dixSetPrivate(PrivateRec **privates, const DevPrivateKey key, pointer val); - -/* - * Register callbacks to be called on private allocation/freeing. - * The calldata argument to the callbacks is a PrivateCallbackPtr. - */ -typedef struct _PrivateCallback { - DevPrivateKey key; /* private registration key */ - pointer *value; /* address of private pointer */ -} PrivateCallbackRec; - -/* - * Register a function to be called when dixAllocPrivate successfully associates - * 'key' with a new PrivateRec. - */ -extern _X_EXPORT int -dixRegisterPrivateInitFunc(const DevPrivateKey key, - CallbackProcPtr callback, pointer userdata); - -/* - * Register a function to be called when dixFreePrivates unassociates 'key' with - * a PrivateRec. - */ -extern _X_EXPORT int -dixRegisterPrivateDeleteFunc(const DevPrivateKey key, - CallbackProcPtr callback, pointer userdata); - -/* - * Unassociates all keys from 'privates', calls the callbacks registered with - * dixRegisterPrivateDeleteFunc, and frees all private data automatically - * allocated via dixRequestPrivate. - */ -extern _X_EXPORT void -dixFreePrivates(PrivateRec *privates); - -/* - * Resets the privates subsystem. dixResetPrivates is called from the main loop - * before each server generation. This function must only be called by main(). - */ -extern _X_EXPORT int -dixResetPrivates(void); - -/* - * These next two functions are necessary because the position of - * the devPrivates field varies by structure and calling code might - * only know the resource type, not the structure definition. - */ - -/* - * Looks up the offset where the devPrivates field is located. - * Returns -1 if no offset has been registered for the resource type. - */ -extern _X_EXPORT int -dixLookupPrivateOffset(RESTYPE type); - -/* - * Specifies the offset where the devPrivates field is located. - * A negative value indicates no devPrivates field is available. - */ -extern _X_EXPORT int -dixRegisterPrivateOffset(RESTYPE type, int offset); - -/* - * Convenience macro for adding an offset to an object pointer - * when making a call to one of the devPrivates functions - */ -#define DEVPRIV_AT(ptr, offset) ((PrivateRec **)((char *)ptr + offset)) - -#endif /* PRIVATES_H */ +/***********************************************************
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************/
+
+#ifndef PRIVATES_H
+#define PRIVATES_H 1
+
+#include "dix.h"
+#include "resource.h"
+
+/*****************************************************************
+ * STUFF FOR PRIVATES
+ *****************************************************************/
+
+typedef int *DevPrivateKey;
+struct _Private;
+typedef struct _Private PrivateRec;
+
+/*
+ * Request pre-allocated private space for your driver/module. This function
+ * increases the amount of space allocated automatically when dixLookupPrivate
+ * is called on a PrivateRec that does not yet have a value associated with
+ * 'key'.
+ *
+ * This function will only increase the reserved size: if a size was previously
+ * requested, then dixRequestPrivate causes later calls to dixLookupPrivate to
+ * allocate the maximum of the old size and 'size'. Requested sizes are reset
+ * to 0 by dixResetPrivates, which is called before each server generation.
+ *
+ * If dixRequestPrivate is not called with a nonzero size for 'key', then the
+ * module responsible for 'key' must manage the associated pointer itself with
+ * dixSetPrivate.
+ *
+ * dixRequestPrivate returns FALSE if it cannot store the requested size.
+ */
+extern _X_EXPORT int
+dixRequestPrivate(const DevPrivateKey key, unsigned size);
+
+/*
+ * Allocates space for an association of 'key' with a value in 'privates'.
+ *
+ * If a nonzero size was requested with dixRequestPrivate, then
+ * dixAllocatePrivate also allocates the requested amount of memory and
+ * associates the pointer to that memory with 'key' in 'privates'. The
+ * allocated memory is initialized to zero. This memory can only be freed by
+ * dixFreePrivates.
+ *
+ * If dixRequestPrivate was never called with a nonzero size, then
+ * dixAllocatePrivate associates NULL with 'key' in 'privates'.
+ *
+ * dixAllocatePrivate returns a pointer to the value associated with 'key' in
+ * 'privates', unless a memory allocation fails, in which case it returns NULL.
+ */
+extern _X_EXPORT pointer *
+dixAllocatePrivate(PrivateRec **privates, const DevPrivateKey key);
+
+/*
+ * Look up a private pointer.
+ *
+ * If no value is currently associated with 'key' in 'privates', then
+ * dixLookupPrivate calls dixAllocatePrivate and returns the resulting
+ * associated value.
+ *
+ * dixLookupPrivate returns NULL if a memory allocation fails.
+ */
+extern _X_EXPORT pointer
+dixLookupPrivate(PrivateRec **privates, const DevPrivateKey key);
+
+/*
+ * Look up the address of a private pointer. If 'key' is not associated with a
+ * value in 'privates', then dixLookupPrivateAddr calls dixAllocatePrivate and
+ * returns a pointer to the resulting associated value.
+ *
+ * dixLookupPrivateAddr returns NULL if 'key' was not previously associated in
+ * 'privates' and a memory allocation fails.
+ */
+extern _X_EXPORT pointer *
+dixLookupPrivateAddr(PrivateRec **privates, const DevPrivateKey key);
+
+/*
+ * Associate 'val' with 'key' in 'privates' so that later calls to
+ * dixLookupPrivate(privates, key) will return 'val'.
+ *
+ * dixSetPrivate returns FALSE if a memory allocation fails.
+ */
+extern _X_EXPORT int
+dixSetPrivate(PrivateRec **privates, const DevPrivateKey key, pointer val);
+
+/*
+ * Unassociates all keys from 'privates' and frees all private data automatically
+ * allocated via dixRequestPrivate.
+ */
+extern _X_EXPORT void
+dixFreePrivates(PrivateRec *privates);
+
+/*
+ * Resets the privates subsystem. dixResetPrivates is called from the main loop
+ * before each server generation. This function must only be called by main().
+ */
+extern _X_EXPORT int
+dixResetPrivates(void);
+
+/*
+ * These next two functions are necessary because the position of
+ * the devPrivates field varies by structure and calling code might
+ * only know the resource type, not the structure definition.
+ */
+
+/*
+ * Looks up the offset where the devPrivates field is located.
+ * Returns -1 if no offset has been registered for the resource type.
+ */
+extern _X_EXPORT int
+dixLookupPrivateOffset(RESTYPE type);
+
+/*
+ * Specifies the offset where the devPrivates field is located.
+ * A negative value indicates no devPrivates field is available.
+ */
+extern _X_EXPORT int
+dixRegisterPrivateOffset(RESTYPE type, int offset);
+
+/*
+ * Convenience macro for adding an offset to an object pointer
+ * when making a call to one of the devPrivates functions
+ */
+#define DEVPRIV_AT(ptr, offset) ((PrivateRec **)((char *)ptr + offset))
+
+#endif /* PRIVATES_H */
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