SMP_STATUS smp_test_file2memmap(const char *file)
{
int fd = 0;
void *start = NULL;
off_t offset = 0;
char buf[1024];
char *new_char = "343345678900987654321****";
if ((fd = smp_open(file, SMP_FILE_RDWD, SMP_FILE_DEF_MODE)) == SMP_FAILURE) {
smp_print_error();
return SMP_FAILURE;
}
if ((offset = smp_file_seek_end_offset(fd, 10)) == SMP_FAILURE) {
smp_print_error();
return SMP_FAILURE;
}
printf("%d\n", (int)smp_write(fd, "~", 1)); //must to do that before mmap
if ((start = smp_file2memmap(fd, SMP_MAP_PROT_WD, SMP_MAP_SHARED)) == NULL) {
smp_print_error();
return SMP_FAILURE;
}
printf("the file in mem is : %s\n", (char *) start);
memcpy(start, new_char, strlen(new_char));
if (smp_file2memmap_remove(start, fd) == SMP_FAILURE) {
smp_print_error();
return SMP_FAILURE;
}
smp_close(fd);
if ((fd = smp_open(file, SMP_FILE_RDWD, SMP_FILE_DEF_MODE)) == SMP_FAILURE) {
smp_print_error();
return SMP_FAILURE;
}
memset(buf, '\0', 1024);
smp_read(fd, buf, 1024);
printf("after mmap, the file was : %s\n", buf);
return SMP_OK;
}
void loop_step(const char * input) {
char string[65536];
char buffer[256];
// read a line
if (input != NULL) {
get_local(string,65536,input);
} else {
get_stdin(string,65536);
}
// parse
if (false) {
} else if (string_start_with(string,"debug ")) {
if (!Searching) {
parse_debug(string);
} else {
ASSERT(false);
}
} else if (string_start_with(string,"go ")) {
if (!Searching && !Delay) {
init();
parse_go(string);
} else {
ASSERT(false);
}
} else if (string_equal(string,"isready")) {
if (!Searching && !Delay) {
init();
}
send("readyok"); // no need to wait when searching (fixit SMK)
} else if (string_equal(string,"ponderhit")) {
if (Searching) {
ASSERT(Infinite);
SearchInput->infinite = false;
Infinite = false;
} else if (Delay) {
send_best_move();
Delay = false;
} else {
ASSERT(false);
}
} else if (string_start_with(string,"position ")) {
if (!Searching && !Delay) {
init();
parse_position(string);
} else {
ASSERT(false);
}
} else if (string_equal(string,"quit")) {
ASSERT(!Searching); // violated by Arena UI
ASSERT(!Delay);
if (Searching && option_get_int("Threads") > 1) {
// Arena issue
SearchInfo->stop = true;
Infinite = false;
smp_sleep();
}
trans_free();
tb_close();
egbb_close();
smp_close();
exit(EXIT_SUCCESS);
} else if (string_start_with(string,"setoption ")) {
if (!Searching && !Delay) {
parse_setoption(string);
} else {
ASSERT(false);
}
} else if (string_equal(string,"stop")) {
if (Searching) {
SearchInfo->stop = true;
Infinite = false;
} else if (Delay) {
send_best_move();
Delay = false;
}
} else if (string_equal(string,"uci")) {
ASSERT(!Searching);
ASSERT(!Delay);
send("id name Fruit reloaded %s", my_version(buffer));
send("id author Fabien Letouzey, Ryan Benitez and Daniel Mehrmann");
option_list();
send("uciok");
} else if (string_equal(string,"ucinewgame")) {
if (!Searching && !Delay && Init) {
trans_clear();
pawn_clear();
material_clear();
} else {
ASSERT(false);
}
}
}
