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#include <config.h>
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#include <glib.h>
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#include <mono/metadata/file-mmap.h>
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#include "MemoryMappedFile-c-api.h"
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#include "File-c-api.h"
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typedef struct {
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void *address;
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size_t length;
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} MmapInstance;
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enum {
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BAD_CAPACITY_FOR_FILE_BACKED = 1,
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CAPACITY_SMALLER_THAN_FILE_SIZE,
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FILE_NOT_FOUND,
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FILE_ALREADY_EXISTS,
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PATH_TOO_LONG,
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COULD_NOT_OPEN,
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CAPACITY_MUST_BE_POSITIVE,
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INVALID_FILE_MODE,
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COULD_NOT_MAP_MEMORY,
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ACCESS_DENIED,
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CAPACITY_LARGER_THAN_LOGICAL_ADDRESS_SPACE
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};
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#ifndef HOST_WIN32
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typedef struct {
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int kind;
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int ref_count;
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size_t capacity;
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char *name;
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int fd;
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} MmapHandle;
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#endif
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void mono_mmap_close (void *mmap_handle)
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{
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/* Not Supported in UnityPAL */
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g_assert_not_reached();
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}
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void mono_mmap_configure_inheritability (void *mmap_handle, gboolean inheritability)
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{
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/* Not Supported in UnityPAL */
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g_assert_not_reached();
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}
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void mono_mmap_flush (void *mmap_handle)
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{
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/* Not Supported in UnityPAL */
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g_assert_not_reached();
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}
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void *mono_mmap_open_file (MonoString *string, int mode, MonoString *mapName, gint64 *capacity, int access, int options, int *error)
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{
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/* Not Supported in UnityPAL */
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g_assert_not_reached();
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return NULL;
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}
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void *mono_mmap_open_handle (void *handle, MonoString *mapName, gint64 *capacity, int access, int options, int *error)
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{
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/* Not Supported in UnityPAL */
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g_assert_not_reached();
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return NULL;
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}
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int mono_mmap_map (void *handle, gint64 offset, gint64 *size, int access, void **mmap_handle, void **base_address)
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{
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/* We are dropping access parameter, UnityPAL does not support */
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g_assert (handle);
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MmapInstance *h = g_malloc0 (sizeof (MmapInstance));
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h->length = *size;
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h->address = UnityPalMemoryMappedFileMapWithParams((UnityPalFileHandle*) handle, (size_t) *size, (size_t) offset);
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if (h->address)
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{
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*mmap_handle = h;
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*base_address = (char*) h->address + offset;
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return 0;
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}
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else
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{
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g_free (h);
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return COULD_NOT_MAP_MEMORY;
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}
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}
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gboolean
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mono_mmap_unmap (void *mmap_handle)
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{
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g_assert (mmap_handle);
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MmapInstance *h = (MmapInstance *)mmap_handle;
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UnityPalMemoryMappedFileUnmapWithParams(h->address, h->length);
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g_free (h);
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/* UnityPAL does not give any indication of success or failure of an unmap, forced
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to always return true */
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return TRUE;
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}
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