Main changes: - COW optimization for safecopy. - safemap, a grant-based interface for sharing memory regions between processes. - Integration with safemap and complete rework of DS, supporting new data types natively (labels, memory ranges, memory mapped ranges). - For further information: http://wiki.minix3.org/en/SummerOfCode2009/MemoryGrants Additional changes not included in the original Wu's branch: - Fixed unhandled case in VM when using COW optimization for safecopy in case of a block that has already been shared as SMAP. - Better interface and naming scheme for sys_saferevmap and ds_retrieve_map calls. - Better input checking in syslib: check for page alignment when creating memory mapping grants. - DS notifies subscribers when an entry is deleted. - Documented the behavior of indirect grants in case of memory mapping. - Test suite in /usr/src/test/safeperf|safecopy|safemap|ds/* reworked and extended. - Minor fixes and general cleanup. - TO-DO: Grant ids should be generated and managed the way endpoints are to make sure grant slots are never misreused.
54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
#define _SYSTEM
|
|
#define _MINIX
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <stdlib.h>
|
|
#include <signal.h>
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
|
|
#include <minix/config.h>
|
|
#include <minix/com.h>
|
|
#include <minix/type.h>
|
|
#include <minix/const.h>
|
|
#include <minix/endpoint.h>
|
|
#include <minix/safecopies.h>
|
|
#include <minix/syslib.h>
|
|
#include <minix/sysutil.h>
|
|
#include <errno.h>
|
|
|
|
#define TEST_PAGE_NUM 4
|
|
#define BUF_SIZE (TEST_PAGE_NUM * CLICK_SIZE)
|
|
#define BUF_START_REQUESTOR 10
|
|
#define BUF_START_GRANTOR 20
|
|
|
|
#define FIFO_REQUESTOR "/usr/src/test/safemap/1fifo"
|
|
#define FIFO_GRANTOR "/usr/src/test/safemap/2fifo"
|
|
|
|
#define FIFO_WAIT(fid) { \
|
|
int a; \
|
|
if(read(fid, &a, sizeof(a)) != sizeof(a)) \
|
|
panic(__FILE__, "FIFO_WAIT failed", NO_NUM); \
|
|
}
|
|
#define FIFO_NOTIFY(fid) { \
|
|
int a = 1; \
|
|
if(write(fid, &a, sizeof(a)) != sizeof(a)) \
|
|
panic(__FILE__, "FIFO_NOTIFY failed", NO_NUM); \
|
|
}
|
|
|
|
#define CHECK_TEST(who, result, expected, test_name) { \
|
|
printf("%-9s: test %s %s\n", who, test_name, \
|
|
(expected == result ? "succeeded" : "failed")); \
|
|
if(expected != result) { \
|
|
exit(1); \
|
|
} \
|
|
}
|
|
|
|
#define DEBUG 0
|
|
#if DEBUG
|
|
# define dprint printf
|
|
#else
|
|
# define dprint (void)
|
|
#endif
|
|
|