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Make "struct buffer"s reusable between sessions.

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This commit is contained in:
Michael Brown 2005-05-09 18:03:44 +00:00
parent b94def2088
commit 73429d6da1
2 changed files with 9 additions and 10 deletions
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13
src/core/buffer.c
View File

@ -32,15 +32,12 @@
* Initialise a buffer
*
*/
void init_buffer ( struct buffer *buffer, physaddr_t start, size_t len ) {
buffer->start = start;
buffer->end = start + len;
buffer->fill = 0;
void init_buffer ( struct buffer *buffer ) {
char tail = 1;
if ( len ) {
char tail = 1;
copy_to_phys ( start, &tail, sizeof ( tail ) );
}
buffer->fill = 0;
if ( buffer->end != buffer->start )
copy_to_phys ( buffer->start, &tail, sizeof ( tail ) );
DBG ( "BUFFER [%x,%x) initialised\n", buffer->start, buffer->end );
}

6
src/include/buffer.h
View File

@ -33,10 +33,12 @@ struct buffer_free_block {
physaddr_t end;
} __attribute__ (( packed ));
/* This must be provided by the architecture-dependent load_buffer.c */
extern struct buffer load_buffer;
/* Functions in buffer.c */
extern void init_buffer ( struct buffer *buffer, physaddr_t start,
size_t len );
extern void init_buffer ( struct buffer *buffer );
extern int fill_buffer ( struct buffer *buffer, void *data,
off_t offset, size_t len );