14#if defined(__GNUC__) && (__GNUC__<9) &&!defined(__clang__)
27#define metapageaddr(field) \
28 ((char *) &vmem.metapage->field - (char *) vmem.metapage)
43 for (
int j = 0;
j <
i;
j++) {
128#ifdef HAVE_CPP_THREADS
129 while (_lock.test_and_set()) {
131 bool empty = _owner < 0;
133 _owner =
vmem.current_process;
135 int p =
vmem.current_process;
136 vmem.metapage->process_info[
p].next = -1;
140 vmem.metapage->process_info[_tail].next =
p;
152#ifdef HAVE_CPP_THREADS
153 while (_lock.test_and_set()) {
157 _head =
vmem.metapage->process_info[_head].next;
167 vmem.metapage->allocator_lock.lock();
171 vmem.metapage->allocator_lock.unlock();
178 printf(
"%2d: %ld",
i, (
long)vaddr);
181 printf(
"(%ld)", (
long)prev);
190 printf(
" -> %ld", (
long)vaddr);
193 printf(
"(%ld)", (
long)prev);
205 vmem.ensure_is_mapped(vaddr);
207 VSeg
seg =
vmem.segment(vaddr);
209 int level =
seg.block_ptr(addr)->level();
218 Block *prev =
vmem.block_ptr(
block->prev);
223 prev->next =
block->next;
282 #if defined(__GNUC__) && (__GNUC__>11)
335 vmem.metapage->segment_count = 0;
345 +
sizeof(ProcessInfo) *
vmem.current_process);
351 +
sizeof(ProcessInfo) *
vmem.current_process);
373 while (write(
fd,
buf, 1) != 1) {
389 int fd =
vmem.channels[
vmem.current_process].fd_read;
391 if (lock && sigstate ==
Waiting) {
395 #if defined(HAVE_POLL) && !defined(__APPLE__)
411 if (
rv== -1)
continue;
420 #if defined(HAVE_POLL) && !defined(__APPLE__)
436 if (
rv== -1)
continue;
473 using namespace internals;
475 for (
int p = 0;
p < MAX_PROCESS;
p++) {
476 if (vmem.metapage->process_info[
p].pid == 0) {
481 }
else if (pid == 0) {
483 int parent = vmem.current_process;
484 vmem.current_process =
p;
486 vmem.metapage->process_info[
p].pid =
getpid();
595 if (!
event->start_listen((
int) (n++))) {
601 event->stop_listen();
626#define metapageaddr(field) \
627 ((char *) &vmem.metapage->field - (char *) vmem.metapage)
642 for (
int j = 0;
j <
i;
j++) {
728#ifdef HAVE_CPP_THREADS
729 while (_lock.test_and_set()) {
731 bool empty = _owner < 0;
733 _owner =
vmem.current_process;
735 int p =
vmem.current_process;
736 vmem.metapage->process_info[
p].next = -1;
740 vmem.metapage->process_info[_tail].next =
p;
752#ifdef HAVE_CPP_THREADS
753 while (_lock.test_and_set()) {
757 _head =
vmem.metapage->process_info[_head].next;
767 vmem.metapage->allocator_lock.lock();
771 vmem.metapage->allocator_lock.unlock();
778 std::printf(
"%2d: %ld",
i, (
long)vaddr);
781 std::printf(
"(%ld)", (
long)prev);
790 std::printf(
" -> %ld", (
long)vaddr);
793 std::printf(
"(%ld)", (
long)prev);
804 #if defined(__GNUC__) && (__GNUC__>11)
809 vmem.ensure_is_mapped(vaddr);
813 int level =
seg.block_ptr(addr)->level();
856 #if defined(__GNUC__) && (__GNUC__>11)
890 #if defined(__GNUC__) && (__GNUC__>11)
943 vmem.metapage->segment_count = 0;
982 while (write(
fd,
buf, 1) != 1) {
998 int fd =
vmem.channels[
vmem.current_process].fd_read;
1000 if (lock && sigstate ==
Waiting) {
1004 #if defined(HAVE_POLL) && !defined(__APPLE__)
1020 if (
rv== -1)
continue;
1029 #if defined(HAVE_POLL) && !defined(__APPLE__)
1045 if (
rv== -1)
continue;
1082 using namespace internals;
1084 for (
int p = 0;
p < MAX_PROCESS;
p++) {
1085 if (vmem.metapage->process_info[
p].pid == 0) {
1090 }
else if (pid == 0) {
1092 int parent = vmem.current_process;
1093 vmem.current_process =
p;
1095 vmem.metapage->process_info[
p].pid =
getpid();
1097 send_signal(parent);
1192 event->_next =
NULL;
1204 if (!
event->start_listen((
int) (n++))) {
1210 event->stop_listen();
CanonicalForm map(const CanonicalForm &primElem, const Variable &alpha, const CanonicalForm &F, const Variable &beta)
map from to such that is mapped onto
int _waiting[internals::MAX_PROCESS+1]
bool start_wait(internals::ipc_signal_t sig=0)
internals::ipc_signal_t _signals[internals::MAX_PROCESS+1]
void init_flock_struct(struct flock &lock_info, size_t offset, size_t len, bool lock)
static ProcessInfo & process_info(int processno)
void lock_file(int fd, size_t offset, size_t len)
void vmem_free(vaddr_t vaddr)
Block * block_ptr(vaddr_t vaddr)
vaddr_t vmem_alloc(size_t size)
static void unlock_process(int processno)
static const size_t MAX_SEGMENTS
vaddr_t freelist[LOG2_SEGMENT_SIZE+1]
static const size_t SEGMENT_SIZE
static const size_t METABLOCK_SIZE
static void lock_process(int processno)
static const int LOG2_SEGMENT_SIZE
ipc_signal_t wait_signal(bool lock)
static const int MAX_PROCESS
ProcessInfo process_info[MAX_PROCESS]
static void lock_allocator()
static segaddr_t find_buddy(segaddr_t addr, int level)
ipc_signal_t check_signal(bool resume, bool lock)
void init_metapage(bool create)
void unlock_file(int fd, size_t offset, size_t len)
bool send_signal(int processno, ipc_signal_t sig, bool lock)
static int find_level(size_t size)
static void unlock_allocator()
static void print_freelists()
internals::Mutex FastLock
int status int void size_t count open
int status int void * buf
Block * block_ptr(vaddr_t vaddr)
void * mmap_segment(int seg)
VSeg segments[MAX_SEGMENTS]
ProcessChannel channels[MAX_PROCESS]
#define metapageaddr(field)