diff options
Diffstat (limited to 'libs/ode-0.16.1/GIMPACT/src/gim_memory.cpp')
| -rw-r--r-- | libs/ode-0.16.1/GIMPACT/src/gim_memory.cpp | 878 |
1 files changed, 878 insertions, 0 deletions
diff --git a/libs/ode-0.16.1/GIMPACT/src/gim_memory.cpp b/libs/ode-0.16.1/GIMPACT/src/gim_memory.cpp new file mode 100644 index 0000000..cc5188d --- /dev/null +++ b/libs/ode-0.16.1/GIMPACT/src/gim_memory.cpp @@ -0,0 +1,878 @@ +
+/*
+-----------------------------------------------------------------------------
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2006 Francisco Leon. C.C. 80087371.
+email: projectileman@yahoo.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of EITHER:
+ (1) The GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 2.1 of the License, or (at
+ your option) any later version. The text of the GNU Lesser
+ General Public License is included with this library in the
+ file GIMPACT-LICENSE-LGPL.TXT.
+ (2) The BSD-style license that is included with this library in
+ the file GIMPACT-LICENSE-BSD.TXT.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
+ GIMPACT-LICENSE-LGPL.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
+
+-----------------------------------------------------------------------------
+*/
+
+
+#include <assert.h>
+#include <stdlib.h>
+#include "GIMPACT/gim_memory.h"
+#include <ode/odeconfig.h>
+#include "config.h"
+//#include "malloc.h"
+//#include "mm_malloc.h"
+
+static gim_alloc_function *g_allocfn = 0;
+// static gim_alloca_function *g_allocafn = 0; -- a nonsense
+static gim_realloc_function *g_reallocfn = 0;
+static gim_free_function *g_freefn = 0;
+
+
+#define VALIDATE_BUFFER_MANAGER(buffer_managers,buffer_manager_id)\
+ if(buffer_manager_id>=G_BUFFER_MANAGER__MAX) return G_BUFFER_OP_INVALID;\
+ GBUFFER_MANAGER_DATA * bm_data;\
+ gim_get_buffer_manager_data(buffer_managers,buffer_manager_id,&bm_data);\
+ if(bm_data == 0) return G_BUFFER_OP_INVALID;\
+
+#define VALIDATE_BUFFER_ID_PT(buffer_id)\
+ GBUFFER_MANAGER_DATA * bm_data = buffer_id->m_bm_data;\
+ if(bm_data == 0) return G_BUFFER_OP_INVALID;\
+ if(buffer_id->m_buffer_id>=bm_data->m_buffer_array.m_size) return G_BUFFER_OP_INVALID;\
+ GBUFFER_DATA * pbuffer = GIM_DYNARRAY_POINTER(GBUFFER_DATA,bm_data->m_buffer_array);\
+ pbuffer += buffer_id->m_buffer_id;\
+ if(pbuffer->m_buffer_handle==0) return G_BUFFER_OP_INVALID;\
+
+
+void GIM_BUFFER_ARRAY_DESTROY(GBUFFER_ARRAY & array_data)
+{
+ gim_buffer_array_unlock(&array_data);
+ gim_buffer_free(&(array_data).m_buffer_id);
+}
+
+void GIM_DYNARRAY_DESTROY(GDYNAMIC_ARRAY & array_data)
+{
+ if(array_data.m_pdata != 0)
+ {
+ gim_free(array_data.m_pdata,0);
+ array_data.m_reserve_size = 0;
+ array_data.m_size = 0;
+ array_data.m_pdata = 0;
+ }
+}
+
+void gim_set_alloc_handler (gim_alloc_function *fn)
+{
+ g_allocfn = fn;
+}
+
+/* -- a nonsense
+void gim_set_alloca_handler (gim_alloca_function *fn)
+{
+ g_allocafn = fn;
+}
+*/
+
+void gim_set_realloc_handler (gim_realloc_function *fn)
+{
+ g_reallocfn = fn;
+}
+
+void gim_set_free_handler (gim_free_function *fn)
+{
+ g_freefn = fn;
+}
+
+gim_alloc_function *gim_get_alloc_handler()
+{
+ return g_allocfn;
+}
+
+/* -- a nonsense
+gim_alloca_function *gim_get_alloca_handler()
+{
+ return g_allocafn;
+}
+*/
+
+gim_realloc_function *gim_get_realloc_handler ()
+{
+ return g_reallocfn;
+}
+
+
+gim_free_function *gim_get_free_handler ()
+{
+ return g_freefn;
+}
+
+
+void * gim_alloc(size_t size)
+{
+ void * ptr;
+/*
+ if (g_allocfn)
+ {
+ ptr = g_allocfn(size);
+ }
+ else
+*/
+ {
+ ptr = malloc(size);//_mm_malloc(size,0);*/
+ }
+ assert(ptr);
+ return ptr;
+}
+
+/* -- a nonsense
+void * gim_alloca(size_t size)
+{
+ if (g_allocafn) return g_allocafn(size); else return alloca(size);
+}
+*/
+
+void * gim_realloc(void *ptr, size_t oldsize, size_t newsize)
+{
+ /*if (g_reallocfn) return g_reallocfn(ptr,oldsize,newsize);
+ else return realloc(ptr,newsize);*/
+ //return realloc(ptr,newsize);
+ void * newptr = gim_alloc(newsize);
+ size_t copysize = newsize> oldsize? oldsize: newsize;
+ memcpy(newptr,ptr,copysize);
+ gim_free(ptr,oldsize);
+ return newptr;
+}
+
+void gim_free(void *ptr, size_t size)
+{
+ if (!ptr) return;
+/* -- if custom allocation function is not used, custom free must not be used too
+ if (g_freefn)
+ {
+ g_freefn(ptr,size);
+ }
+ else
+*/
+ {
+ free(ptr);//_mm_free(ptr);
+ }
+}
+
+///******************************* BUFFER MANAGERS ******************************///
+
+//!** Basic buffer prototype functions
+
+static GPTR _system_buffer_alloc_function(GUINT32 size,int usage)
+{
+ void * newdata = gim_alloc(size);
+ memset(newdata,0,size);
+ return (GPTR)newdata;
+}
+
+static GPTR _system_buffer_alloc_data_function(const void * pdata,GUINT32 size,int usage)
+{
+ void * newdata = gim_alloc(size);
+ memcpy(newdata,pdata,size);
+ return (GPTR)(newdata);
+}
+
+static GPTR _system_buffer_realloc_function(GPTR buffer_handle,GUINT32 oldsize,int old_usage,GUINT32 newsize,int new_usage)
+{
+ void * newdata = gim_realloc(buffer_handle,oldsize,newsize);
+ return (GPTR)(newdata);
+}
+
+static void _system_buffer_free_function(GPTR buffer_handle,GUINT32 size)
+{
+ gim_free(buffer_handle,size);
+}
+
+static char * _system_lock_buffer_function(GPTR buffer_handle,int access)
+{
+ return (char * )(buffer_handle);
+}
+
+
+static void _system_unlock_buffer_function(GPTR buffer_handle)
+{
+}
+
+static void _system_download_from_buffer_function(
+ GPTR source_buffer_handle,
+ GUINT32 source_pos,
+ void * destdata,
+ GUINT32 copysize)
+{
+ char * pdata;
+ pdata = (char *)source_buffer_handle;
+ memcpy(destdata,pdata+source_pos,copysize);
+}
+
+static void _system_upload_to_buffer_function(
+ GPTR dest_buffer_handle,
+ GUINT32 dest_pos,
+ void * sourcedata,
+ GUINT32 copysize)
+{
+ char * pdata;
+ pdata = (char * )dest_buffer_handle;
+ memcpy(pdata+dest_pos,sourcedata,copysize);
+}
+
+static void _system_copy_buffers_function(
+ GPTR source_buffer_handle,
+ GUINT32 source_pos,
+ GPTR dest_buffer_handle,
+ GUINT32 dest_pos,
+ GUINT32 copysize)
+{
+ char * pdata1,*pdata2;
+ pdata1 = (char *)source_buffer_handle;
+ pdata2 = (char *)dest_buffer_handle;
+ memcpy(pdata2+dest_pos,pdata1+source_pos,copysize);
+}
+
+static GPTR _shared_buffer_alloc_function(GUINT32 size,int usage)
+{
+ return 0;
+}
+
+static GPTR _shared_buffer_alloc_data_function(const void * pdata,GUINT32 size,int usage)
+{
+ return (GPTR)pdata;
+}
+
+#if 0
+static GPTR _shared_buffer_realloc_function(GPTR buffer_handle,GUINT32 oldsize,int old_usage,GUINT32 newsize,int new_usage)
+{
+ return 0;
+}
+#endif
+
+static void _shared_buffer_free_function(GPTR buffer_handle,GUINT32 size)
+{
+}
+
+static inline int _is_buffer_manager_data_active(GBUFFER_MANAGER_DATA * bm_data)
+{
+ return bm_data->m_buffer_array.m_pdata != 0;
+}
+
+static inline void _init_buffer_manager_data(GBUFFER_MANAGER_DATA * bm_data)
+{
+ bm_data->m_buffer_array.m_pdata = 0;
+}
+
+static const GBUFFER_MANAGER_PROTOTYPE g_bm_prototypes[G_BUFFER_MANAGER__MAX] =
+{
+ {
+ &_system_buffer_alloc_function, // alloc_fn;
+ &_system_buffer_alloc_data_function, // alloc_data_fn;
+ &_system_buffer_realloc_function, // realloc_fn;
+ &_system_buffer_free_function, // free_fn;
+ &_system_lock_buffer_function, // lock_buffer_fn;
+ &_system_unlock_buffer_function, // unlock_buffer_fn;
+ &_system_download_from_buffer_function, // download_from_buffer_fn;
+ &_system_upload_to_buffer_function, // upload_to_buffer_fn;
+ &_system_copy_buffers_function, // copy_buffers_fn;
+ }, // G_BUFFER_MANAGER_SYSTEM
+
+ {
+ &_shared_buffer_alloc_function, // alloc_fn;
+ &_shared_buffer_alloc_data_function, // alloc_data_fn;
+ &_system_buffer_realloc_function, // realloc_fn;
+ &_shared_buffer_free_function, // free_fn;
+ &_system_lock_buffer_function, // lock_buffer_fn;
+ &_system_unlock_buffer_function, // unlock_buffer_fn;
+ &_system_download_from_buffer_function, // download_from_buffer_fn;
+ &_system_upload_to_buffer_function, // upload_to_buffer_fn;
+ &_system_copy_buffers_function, // copy_buffers_fn;
+ }, // G_BUFFER_MANAGER_SHARED
+};
+
+int gim_is_buffer_manager_active(GBUFFER_MANAGER_DATA buffer_managers[],
+ GUINT32 buffer_manager_id)
+{
+ GBUFFER_MANAGER_DATA * bm_data;
+ bm_data = &buffer_managers[buffer_manager_id];
+ return _is_buffer_manager_data_active(bm_data);
+}
+
+//!** Buffer manager operations
+void gim_create_buffer_manager(GBUFFER_MANAGER_DATA buffer_managers[],
+ GUINT32 buffer_manager_id)
+{
+ GBUFFER_MANAGER_DATA * bm_data;
+ bm_data = &buffer_managers[buffer_manager_id];
+
+ if (_is_buffer_manager_data_active(bm_data))
+ {
+ gim_destroy_buffer_manager(buffer_managers, buffer_manager_id);
+ }
+
+ //CREATE ARRAYS
+ GIM_DYNARRAY_CREATE(GBUFFER_DATA,bm_data->m_buffer_array,G_ARRAY_BUFFERMANAGER_INIT_SIZE);
+ GIM_DYNARRAY_CREATE(GUINT32,bm_data->m_free_positions,G_ARRAY_BUFFERMANAGER_INIT_SIZE);
+ bm_data->m_prototype = g_bm_prototypes + buffer_manager_id;
+ bm_data->m_buffer_manager_id = buffer_manager_id;
+}
+
+void gim_destroy_buffer_manager(GBUFFER_MANAGER_DATA buffer_managers[], GUINT32 buffer_manager_id)
+{
+ GBUFFER_MANAGER_DATA * bm_data;
+ gim_get_buffer_manager_data(buffer_managers,buffer_manager_id,&bm_data);
+ if(bm_data == 0) return;
+ //Destroy all buffers
+
+ GBUFFER_DATA * buffers = GIM_DYNARRAY_POINTER(GBUFFER_DATA,bm_data->m_buffer_array);
+ GUINT32 i, buffer_count = bm_data->m_buffer_array.m_size;
+ for (i=0;i<buffer_count ;i++ )
+ {
+ GBUFFER_DATA * current_buffer = buffers + i;
+ if(current_buffer->m_buffer_handle!=0) //Is active
+ {
+ // free handle
+ bm_data->m_prototype->free_fn(current_buffer->m_buffer_handle,current_buffer->m_size);
+ }
+ }
+
+ //destroy buffer array
+ GIM_DYNARRAY_DESTROY(bm_data->m_buffer_array);
+ //destroy free positions
+ GIM_DYNARRAY_DESTROY(bm_data->m_free_positions);
+}
+void gim_get_buffer_manager_data(GBUFFER_MANAGER_DATA buffer_managers[],
+ GUINT32 buffer_manager_id,GBUFFER_MANAGER_DATA ** pbm_data)
+{
+ GBUFFER_MANAGER_DATA * bm_data;
+ bm_data = &buffer_managers[buffer_manager_id];
+
+ if (_is_buffer_manager_data_active(bm_data))
+ {
+ *pbm_data = bm_data;
+ }
+ else
+ {
+ *pbm_data = 0;
+ }
+}
+
+void gim_init_buffer_managers(GBUFFER_MANAGER_DATA buffer_managers[])
+{
+ GUINT32 i;
+ for (i=0;i<G_BUFFER_MANAGER__MAX;i++)
+ {
+ _init_buffer_manager_data(buffer_managers + i);
+ }
+
+ // Add the two most important buffer managers
+
+ //add system buffer manager
+ gim_create_buffer_manager(buffer_managers,G_BUFFER_MANAGER_SYSTEM );
+
+ //add shared buffer manager
+ gim_create_buffer_manager(buffer_managers,G_BUFFER_MANAGER_SHARED);
+}
+
+void gim_terminate_buffer_managers(GBUFFER_MANAGER_DATA buffer_managers[])
+{
+ GUINT32 i;
+ for (i=0;i<G_BUFFER_MANAGER__MAX;i++)
+ {
+ gim_destroy_buffer_manager(buffer_managers,i);
+ }
+}
+
+//!** Buffer operations
+
+void GET_AVALIABLE_BUFFER_ID(GBUFFER_MANAGER_DATA * buffer_manager, GUINT32 & buffer_id)
+{
+ if(buffer_manager->m_free_positions.m_size>0)\
+ {
+ GUINT32 * _pointer = GIM_DYNARRAY_POINTER(GUINT32,buffer_manager->m_free_positions);
+ buffer_id = _pointer[buffer_manager->m_free_positions.m_size-1];
+ GIM_DYNARRAY_POP_ITEM(buffer_manager->m_free_positions);
+ }
+ else
+ {
+ buffer_id = buffer_manager->m_buffer_array.m_size;
+ GIM_DYNARRAY_PUSH_EMPTY(GBUFFER_DATA,buffer_manager->m_buffer_array);
+ }
+}
+
+GINT32 _validate_buffer_id(GBUFFER_ID * buffer_id,GBUFFER_DATA ** ppbuffer,GBUFFER_MANAGER_DATA ** pbm_data)
+{
+ VALIDATE_BUFFER_ID_PT(buffer_id)
+ *ppbuffer = pbuffer;
+ *pbm_data = bm_data;
+ return G_BUFFER_OP_SUCCESS;
+}
+
+GUINT32 gim_create_buffer(
+ GBUFFER_MANAGER_DATA buffer_managers[],
+ GUINT32 buffer_manager_id,
+ GUINT32 buffer_size,
+ int usage,
+ GBUFFER_ID * buffer_id)
+{
+ VALIDATE_BUFFER_MANAGER(buffer_managers,buffer_manager_id)
+
+ GPTR newbufferhandle = bm_data->m_prototype->alloc_fn(buffer_size,usage);
+ if(newbufferhandle==0) return G_BUFFER_OP_INVALID;
+
+ GET_AVALIABLE_BUFFER_ID(bm_data,buffer_id->m_buffer_id);
+ buffer_id->m_bm_data = bm_data;
+
+ GBUFFER_DATA * pbuffer = GIM_DYNARRAY_POINTER(GBUFFER_DATA,bm_data->m_buffer_array);
+ pbuffer += buffer_id->m_buffer_id ;
+ pbuffer->m_buffer_handle = newbufferhandle;
+ pbuffer->m_size = buffer_size;
+ pbuffer->m_usage = usage;
+ pbuffer->m_lock_count = 0;
+ pbuffer->m_refcount = 0;
+ pbuffer->m_mapped_pointer = 0;
+
+ //set shadow buffer if needed
+
+ if(usage == G_MU_STATIC_READ ||
+ usage == G_MU_STATIC_READ_DYNAMIC_WRITE||
+ usage == G_MU_STATIC_READ_DYNAMIC_WRITE_COPY)
+ {
+ gim_create_common_buffer(buffer_managers,buffer_size,&pbuffer->m_shadow_buffer);
+ }
+ else
+ {
+ pbuffer->m_shadow_buffer.m_bm_data = 0;
+ pbuffer->m_shadow_buffer.m_buffer_id = G_UINT_INFINITY;
+ }
+ return G_BUFFER_OP_SUCCESS;
+}
+
+
+GUINT32 gim_create_buffer_from_data(
+ GBUFFER_MANAGER_DATA buffer_managers[],
+ GUINT32 buffer_manager_id,
+ const void * pdata,
+ GUINT32 buffer_size,
+ int usage,
+ GBUFFER_ID * buffer_id)
+{
+ VALIDATE_BUFFER_MANAGER(buffer_managers,buffer_manager_id)
+
+ GPTR newbufferhandle = bm_data->m_prototype->alloc_data_fn(pdata,buffer_size,usage);
+ if(newbufferhandle==0) return G_BUFFER_OP_INVALID;
+
+ GET_AVALIABLE_BUFFER_ID(bm_data,buffer_id->m_buffer_id);
+ buffer_id->m_bm_data = bm_data;
+
+ GBUFFER_DATA * pbuffer = GIM_DYNARRAY_POINTER(GBUFFER_DATA,bm_data->m_buffer_array);
+ pbuffer += buffer_id->m_buffer_id ;
+ pbuffer->m_buffer_handle = newbufferhandle;
+ pbuffer->m_size = buffer_size;
+ pbuffer->m_usage = usage;
+ pbuffer->m_lock_count = 0;
+ pbuffer->m_mapped_pointer = 0;
+ pbuffer->m_refcount = 0;
+
+ //set shadow buffer if needed
+
+ if(usage == G_MU_STATIC_READ ||
+ usage == G_MU_STATIC_READ_DYNAMIC_WRITE||
+ usage == G_MU_STATIC_READ_DYNAMIC_WRITE_COPY)
+ {
+ gim_create_common_buffer_from_data(buffer_managers,pdata,buffer_size,&pbuffer->m_shadow_buffer);
+ }
+ else
+ {
+ pbuffer->m_shadow_buffer.m_bm_data = 0;
+ pbuffer->m_shadow_buffer.m_buffer_id = G_UINT_INFINITY;
+ }
+ return G_BUFFER_OP_SUCCESS;
+}
+
+GUINT32 gim_create_common_buffer(GBUFFER_MANAGER_DATA buffer_managers[],
+ GUINT32 buffer_size, GBUFFER_ID * buffer_id)
+{
+ return gim_create_buffer(buffer_managers,G_BUFFER_MANAGER_SYSTEM,buffer_size,G_MU_DYNAMIC_READ_WRITE,buffer_id);
+}
+
+GUINT32 gim_create_common_buffer_from_data(GBUFFER_MANAGER_DATA buffer_managers[],
+ const void * pdata, GUINT32 buffer_size, GBUFFER_ID * buffer_id)
+{
+ return gim_create_buffer_from_data(buffer_managers,G_BUFFER_MANAGER_SYSTEM,pdata,buffer_size,G_MU_DYNAMIC_READ_WRITE,buffer_id);
+}
+
+GUINT32 gim_create_shared_buffer_from_data(GBUFFER_MANAGER_DATA buffer_managers[],
+ const void * pdata, GUINT32 buffer_size, GBUFFER_ID * buffer_id)
+{
+ return gim_create_buffer_from_data(buffer_managers,G_BUFFER_MANAGER_SHARED,pdata,buffer_size,G_MU_DYNAMIC_READ_WRITE,buffer_id);
+}
+
+GINT32 gim_buffer_realloc(GBUFFER_ID * buffer_id,GUINT32 newsize)
+{
+ VALIDATE_BUFFER_ID_PT(buffer_id)
+ if(pbuffer->m_lock_count>0) return G_BUFFER_OP_INVALID;
+ GPTR newhandle = buffer_id->m_bm_data->m_prototype->realloc_fn(
+ pbuffer->m_buffer_handle,pbuffer->m_size,pbuffer->m_usage,newsize,pbuffer->m_usage);
+ if(newhandle==0) return G_BUFFER_OP_INVALID;
+ pbuffer->m_buffer_handle = newhandle;
+ //realloc shadow buffer if any
+ gim_buffer_realloc(&pbuffer->m_shadow_buffer,newsize);
+ return G_BUFFER_OP_SUCCESS;
+}
+
+GINT32 gim_buffer_add_ref(GBUFFER_ID * buffer_id)
+{
+ VALIDATE_BUFFER_ID_PT(buffer_id)
+ pbuffer->m_refcount++;
+ return G_BUFFER_OP_SUCCESS;
+}
+
+GINT32 gim_buffer_free(GBUFFER_ID * buffer_id)
+{
+ VALIDATE_BUFFER_ID_PT(buffer_id)
+ if(pbuffer->m_lock_count>0) return G_BUFFER_OP_INVALID;
+ if(pbuffer->m_refcount>0) pbuffer->m_refcount--;
+ if(pbuffer->m_refcount>0) return G_BUFFER_OP_STILLREFCOUNTED;
+
+ buffer_id->m_bm_data->m_prototype->free_fn(
+ pbuffer->m_buffer_handle,pbuffer->m_size);
+ //destroy shadow buffer if needed
+ gim_buffer_free(&pbuffer->m_shadow_buffer);
+ // Obtain a free slot index for a new buffer
+ GIM_DYNARRAY_PUSH_ITEM(GUINT32,bm_data->m_free_positions,buffer_id->m_buffer_id);
+ pbuffer->m_buffer_handle = 0;
+ pbuffer->m_size = 0;
+ pbuffer->m_shadow_buffer.m_bm_data = 0;
+ pbuffer->m_shadow_buffer.m_buffer_id = G_UINT_INFINITY;
+ return G_BUFFER_OP_SUCCESS;
+}
+
+GINT32 gim_lock_buffer(GBUFFER_ID * buffer_id,int access,char ** map_pointer)
+{
+ VALIDATE_BUFFER_ID_PT(buffer_id)
+ if(pbuffer->m_lock_count>0)
+ {
+ if(pbuffer->m_access!=access) return G_BUFFER_OP_INVALID;
+ pbuffer->m_lock_count++;
+ *map_pointer = pbuffer->m_mapped_pointer;
+ return G_BUFFER_OP_SUCCESS;
+ }
+
+ pbuffer->m_access = access;
+
+ GUINT32 result;
+ if(pbuffer->m_usage==G_MU_STATIC_WRITE)
+ {
+ *map_pointer = 0;///no access
+ return G_BUFFER_OP_INVALID;
+ }
+ else if(pbuffer->m_usage==G_MU_STATIC_READ)
+ {
+ if(pbuffer->m_access == G_MA_READ_ONLY)
+ {
+ result = gim_lock_buffer(&pbuffer->m_shadow_buffer,access,map_pointer);
+ if(result!= G_BUFFER_OP_SUCCESS) return G_BUFFER_OP_INVALID;
+ pbuffer->m_mapped_pointer = *map_pointer;
+ pbuffer->m_lock_count++;
+ }
+ else
+ {
+ *map_pointer = 0;
+ return G_BUFFER_OP_INVALID;
+ }
+ }
+ else if(pbuffer->m_usage==G_MU_STATIC_READ_DYNAMIC_WRITE)
+ {
+ if(pbuffer->m_access == G_MA_READ_ONLY)
+ {
+ result = gim_lock_buffer(&pbuffer->m_shadow_buffer,access,map_pointer);
+ if(result!= G_BUFFER_OP_SUCCESS) return G_BUFFER_OP_INVALID;
+ pbuffer->m_mapped_pointer = *map_pointer;
+ pbuffer->m_lock_count++;
+ }
+ else if(pbuffer->m_access == G_MA_WRITE_ONLY)
+ {
+ pbuffer->m_mapped_pointer = buffer_id->m_bm_data->m_prototype->lock_buffer_fn(
+ pbuffer->m_buffer_handle,access);
+ *map_pointer = pbuffer->m_mapped_pointer;
+ pbuffer->m_lock_count++;
+ }
+ else if(pbuffer->m_access == G_MA_READ_WRITE)
+ {
+ *map_pointer = 0;
+ return G_BUFFER_OP_INVALID;
+ }
+ }
+ else if(pbuffer->m_usage==G_MU_STATIC_READ_DYNAMIC_WRITE_COPY)
+ {
+ result = gim_lock_buffer(&pbuffer->m_shadow_buffer,access,map_pointer);
+ if(result!= G_BUFFER_OP_SUCCESS) return G_BUFFER_OP_INVALID;
+ pbuffer->m_mapped_pointer = *map_pointer;
+ pbuffer->m_lock_count++;
+ }
+ else if(pbuffer->m_usage==G_MU_STATIC_WRITE_DYNAMIC_READ)
+ {
+ if(pbuffer->m_access == G_MA_READ_ONLY)
+ {
+ pbuffer->m_mapped_pointer = buffer_id->m_bm_data->m_prototype->lock_buffer_fn(
+ pbuffer->m_buffer_handle,access);
+ *map_pointer = pbuffer->m_mapped_pointer;
+ pbuffer->m_lock_count++;
+ }
+ else
+ {
+ *map_pointer = 0;
+ return G_BUFFER_OP_INVALID;
+ }
+ }
+ else if(pbuffer->m_usage==G_MU_DYNAMIC_READ_WRITE)
+ {
+ pbuffer->m_mapped_pointer = buffer_id->m_bm_data->m_prototype->lock_buffer_fn(
+ pbuffer->m_buffer_handle,access);
+ *map_pointer = pbuffer->m_mapped_pointer;
+ pbuffer->m_lock_count++;
+ }
+ return G_BUFFER_OP_SUCCESS;
+}
+
+GINT32 gim_unlock_buffer(GBUFFER_ID * buffer_id)
+{
+ VALIDATE_BUFFER_ID_PT(buffer_id)
+ if(pbuffer->m_lock_count==0) return G_BUFFER_OP_INVALID;
+
+ if(pbuffer->m_lock_count>1)
+ {
+ pbuffer->m_lock_count--;
+ return G_BUFFER_OP_SUCCESS;
+ }
+
+
+ GUINT32 result;
+ if(pbuffer->m_usage==G_MU_STATIC_WRITE)
+ {
+ pbuffer->m_mapped_pointer = 0;
+ pbuffer->m_lock_count=0;
+ return G_BUFFER_OP_INVALID;
+ }
+ else if(pbuffer->m_usage==G_MU_STATIC_READ)
+ {
+ if(pbuffer->m_access == G_MA_READ_ONLY)
+ {
+ result = gim_unlock_buffer(&pbuffer->m_shadow_buffer);
+ if(result!= G_BUFFER_OP_SUCCESS) return G_BUFFER_OP_INVALID;
+ pbuffer->m_mapped_pointer = 0;
+ pbuffer->m_lock_count=0;
+ }
+ else
+ {
+ pbuffer->m_mapped_pointer = 0;
+ pbuffer->m_lock_count=0;
+ return G_BUFFER_OP_INVALID;
+ }
+ }
+ else if(pbuffer->m_usage==G_MU_STATIC_READ_DYNAMIC_WRITE)
+ {
+ if(pbuffer->m_access == G_MA_READ_ONLY)
+ {
+ result = gim_unlock_buffer(&pbuffer->m_shadow_buffer);
+ if(result!= G_BUFFER_OP_SUCCESS) return G_BUFFER_OP_INVALID;
+ pbuffer->m_mapped_pointer = 0;
+ pbuffer->m_lock_count=0;
+ }
+ else if(pbuffer->m_access == G_MA_WRITE_ONLY)
+ {
+ buffer_id->m_bm_data->m_prototype->unlock_buffer_fn(
+ pbuffer->m_buffer_handle);
+ pbuffer->m_mapped_pointer = 0;
+ pbuffer->m_lock_count=0;
+ }
+ else if(pbuffer->m_access == G_MA_READ_WRITE)
+ {
+ pbuffer->m_mapped_pointer = 0;
+ pbuffer->m_lock_count=0;
+ return G_BUFFER_OP_INVALID;
+ }
+ }
+ else if(pbuffer->m_usage==G_MU_STATIC_READ_DYNAMIC_WRITE_COPY)
+ {
+ result = gim_unlock_buffer(&pbuffer->m_shadow_buffer);
+ if(result!= G_BUFFER_OP_SUCCESS) return G_BUFFER_OP_INVALID;
+ pbuffer->m_mapped_pointer = 0;
+ pbuffer->m_lock_count=0;
+ if(pbuffer->m_access == G_MA_WRITE_ONLY||pbuffer->m_access == G_MA_READ_WRITE)
+ {
+ gim_copy_buffers(&pbuffer->m_shadow_buffer,0,buffer_id,0,pbuffer->m_size);
+ }
+ }
+ else if(pbuffer->m_usage==G_MU_STATIC_WRITE_DYNAMIC_READ)
+ {
+ if(pbuffer->m_access == G_MA_READ_ONLY)
+ {
+ buffer_id->m_bm_data->m_prototype->unlock_buffer_fn(
+ pbuffer->m_buffer_handle);
+ pbuffer->m_mapped_pointer = 0;
+ pbuffer->m_lock_count=0;
+ }
+ else
+ {
+ pbuffer->m_mapped_pointer = 0;
+ pbuffer->m_lock_count=0;
+ return G_BUFFER_OP_INVALID;
+ }
+ }
+ else if(pbuffer->m_usage==G_MU_DYNAMIC_READ_WRITE)
+ {
+ buffer_id->m_bm_data->m_prototype->unlock_buffer_fn(
+ pbuffer->m_buffer_handle);
+ pbuffer->m_mapped_pointer = 0;
+ pbuffer->m_lock_count=0;
+ }
+ return G_BUFFER_OP_SUCCESS;
+}
+
+GINT32 gim_get_buffer_size(GBUFFER_ID * buffer_id,GUINT32 * buffer_size)
+{
+ VALIDATE_BUFFER_ID_PT(buffer_id)
+ *buffer_size = pbuffer->m_size;
+ return G_BUFFER_OP_SUCCESS;
+}
+
+GINT32 gim_get_buffer_is_locked(GBUFFER_ID * buffer_id,GUINT32 * lock_count)
+{
+ VALIDATE_BUFFER_ID_PT(buffer_id)
+ *lock_count = pbuffer->m_lock_count;
+ return G_BUFFER_OP_SUCCESS;
+}
+
+
+GINT32 gim_download_from_buffer(
+ GBUFFER_ID * buffer_id,
+ GUINT32 source_pos,
+ void * destdata,
+ GUINT32 copysize)
+{
+ VALIDATE_BUFFER_ID_PT(buffer_id)
+ buffer_id->m_bm_data->m_prototype->download_from_buffer_fn(
+ pbuffer->m_buffer_handle,source_pos,destdata,copysize);
+ return G_BUFFER_OP_SUCCESS;
+}
+
+GINT32 gim_upload_to_buffer(
+ GBUFFER_ID * buffer_id,
+ GUINT32 dest_pos,
+ void * sourcedata,
+ GUINT32 copysize)
+{
+ VALIDATE_BUFFER_ID_PT(buffer_id)
+ buffer_id->m_bm_data->m_prototype->upload_to_buffer_fn(
+ pbuffer->m_buffer_handle,dest_pos,sourcedata,copysize);
+ return G_BUFFER_OP_SUCCESS;
+}
+
+GINT32 gim_copy_buffers(
+ GBUFFER_ID * source_buffer_id,
+ GUINT32 source_pos,
+ GBUFFER_ID * dest_buffer_id,
+ GUINT32 dest_pos,
+ GUINT32 copysize)
+{
+ GBUFFER_MANAGER_DATA * bm_data1,* bm_data2;
+ GBUFFER_DATA * pbuffer1, * pbuffer2;
+ void * tempdata;
+ if(_validate_buffer_id(source_buffer_id,&pbuffer1,&bm_data1)!= G_BUFFER_OP_SUCCESS) return G_BUFFER_OP_INVALID;
+
+ if(_validate_buffer_id(dest_buffer_id,&pbuffer2,&bm_data2)!= G_BUFFER_OP_SUCCESS) return G_BUFFER_OP_INVALID;
+
+ if((bm_data1->m_buffer_manager_id == bm_data2->m_buffer_manager_id)||
+ (bm_data1->m_buffer_manager_id == G_BUFFER_MANAGER_SYSTEM && bm_data2->m_buffer_manager_id == G_BUFFER_MANAGER_SHARED)||
+ (bm_data1->m_buffer_manager_id == G_BUFFER_MANAGER_SHARED && bm_data2->m_buffer_manager_id == G_BUFFER_MANAGER_SYSTEM)
+ )
+ {//smooth copy
+ bm_data1->m_prototype->copy_buffers_fn(
+ pbuffer1->m_buffer_handle,source_pos,pbuffer2->m_buffer_handle,dest_pos,copysize);
+ }
+ else if(bm_data1->m_buffer_manager_id == G_BUFFER_MANAGER_SYSTEM ||
+ bm_data1->m_buffer_manager_id == G_BUFFER_MANAGER_SHARED)
+ {
+ //hard copy
+ tempdata = (void *)pbuffer1->m_buffer_handle;
+ //upload data
+ bm_data2->m_prototype->upload_to_buffer_fn(
+ pbuffer2->m_buffer_handle,dest_pos,tempdata,copysize);
+ }
+ else
+ {
+ //very hard copy
+ void * tempdata = gim_alloc(copysize);
+ //download data
+ bm_data1->m_prototype->download_from_buffer_fn(
+ pbuffer1->m_buffer_handle,source_pos,tempdata,copysize);
+
+ //upload data
+ bm_data2->m_prototype->upload_to_buffer_fn(
+ pbuffer2->m_buffer_handle,dest_pos,tempdata,copysize);
+ //delete temp buffer
+ gim_free(tempdata,copysize);
+ }
+ return G_BUFFER_OP_SUCCESS;
+}
+
+GINT32 gim_buffer_array_lock(GBUFFER_ARRAY * array_data, int access)
+{
+ if(array_data->m_buffer_data != 0) return G_BUFFER_OP_SUCCESS;
+ GINT32 result = gim_lock_buffer(&array_data->m_buffer_id,access,&array_data->m_buffer_data);
+ if(result!= G_BUFFER_OP_SUCCESS) return result;
+ array_data->m_buffer_data += array_data->m_byte_offset;
+ return result;
+}
+
+GINT32 gim_buffer_array_unlock(GBUFFER_ARRAY * array_data)
+{
+ if(array_data->m_buffer_data == 0) return G_BUFFER_OP_SUCCESS;
+ GINT32 result = gim_unlock_buffer(&array_data->m_buffer_id);
+ if(result!= G_BUFFER_OP_SUCCESS) return result;
+ array_data->m_buffer_data = 0;
+ return result;
+}
+
+void gim_buffer_array_copy_ref(GBUFFER_ARRAY * source_data,GBUFFER_ARRAY * dest_data)
+{
+ dest_data->m_buffer_id.m_buffer_id = source_data->m_buffer_id.m_buffer_id;
+ dest_data->m_buffer_id.m_bm_data = source_data->m_buffer_id.m_bm_data;
+ dest_data->m_buffer_data = 0;
+ dest_data->m_byte_stride = source_data->m_byte_stride;
+ dest_data->m_byte_offset = source_data->m_byte_offset;
+ dest_data->m_element_count = source_data->m_element_count;
+ gim_buffer_add_ref(&dest_data->m_buffer_id);
+}
+
+void gim_buffer_array_copy_value(GBUFFER_ARRAY * source_data,
+ GBUFFER_MANAGER_DATA dest_buffer_managers[],GBUFFER_ARRAY * dest_data,
+ GUINT32 buffer_manager_id,int usage)
+{
+ //Create new buffer
+ GUINT32 buffsize = source_data->m_element_count*source_data->m_byte_stride;
+ gim_create_buffer(dest_buffer_managers,buffer_manager_id,buffsize,usage,&dest_data->m_buffer_id);
+
+ //copy ref data
+ dest_data->m_buffer_data = 0;
+ dest_data->m_byte_stride = source_data->m_byte_stride;
+ dest_data->m_byte_offset = 0;
+ dest_data->m_element_count = source_data->m_element_count;
+ gim_buffer_add_ref(&dest_data->m_buffer_id);
+ //copy buffers
+ gim_copy_buffers(&source_data->m_buffer_id,source_data->m_byte_offset,&dest_data->m_buffer_id,0,buffsize);
+}
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