void set_up_heap ( // Create and initialize the heap.
// ===========
//
Task* task,
Bool is_boot,
Heapcleaner_Args* params
) {
int ratio;
int max_size = 0; // Initialized only to suppress a gcc -Wall warning.
Heap* heap;
Agegroup* ag;
Multipage_Ram_Region* multipage_ram_region;
Val* agegroup0_buffer;
// Default any parameters unspecified by user:
//
if (params->agegroup0_buffer_bytesize == 0) params->agegroup0_buffer_bytesize = DEFAULT_AGEGROUP0_BUFFER_BYTESIZE; // From src/c/h/runtime-configuration.h
if (params->active_agegroups < 0) params->active_agegroups = DEFAULT_ACTIVE_AGEGROUPS; // From src/c/h/runtime-configuration.h
if (params->oldest_agegroup_keeping_idle_fromspace_buffers < 0) {
params->oldest_agegroup_keeping_idle_fromspace_buffers = DEFAULT_OLDEST_AGEGROUP_KEEPING_IDLE_FROMSPACE_BUFFERS; // From src/c/h/runtime-configuration.h
}
// First we initialize the underlying memory system:
//
set_up_multipage_ram_region_os_interface (); // set_up_multipage_ram_region_os_interface def in src/c/ram/get-multipage-ram-region-from-mach.c
// set_up_multipage_ram_region_os_interface def in src/c/ram/get-multipage-ram-region-from-mmap.c
// set_up_multipage_ram_region_os_interface def in src/c/ram/get-multipage-ram-region-from-win32.c
// Allocate a ram region to hold
// the book_to_sibid__global and agegroup0 buffer:
//
{ long book2sibid_bytesize;
#ifdef TWO_LEVEL_MAP
#error two level map not supported
#else
book2sibid_bytesize = BOOK2SIBID_TABLE_SIZE_IN_SLOTS * sizeof( Sibid );
#endif
multipage_ram_region
=
obtain_multipage_ram_region_from_os(
//
MAX_PTHREADS * params->agegroup0_buffer_bytesize
+
book2sibid_bytesize
);
if (multipage_ram_region == NULL) die ("Unable to allocate ram region for book_to_sibid__global");
book_to_sibid__global = (Sibid*) BASE_ADDRESS_OF_MULTIPAGE_RAM_REGION( multipage_ram_region );
agegroup0_buffer = (Val*) (((Punt)book_to_sibid__global) + book2sibid_bytesize);
}
// Initialize the book_to_sibid__global:
//
#ifdef TWO_LEVEL_MAP
#error two level map not supported
#else
for (int i = 0; i < BOOK2SIBID_TABLE_SIZE_IN_SLOTS; i++) {
//
book_to_sibid__global[ i ] = UNMAPPED_BOOK_SIBID;
}
#endif
// Initialize heap descriptor:
//
heap = MALLOC_CHUNK(Heap);
//
memset ((char*)heap, 0, sizeof(Heap));
//
for (int age = 0; age < MAX_AGEGROUPS; age++) {
//
ratio = DfltRatios[age];
if (age == 0) { max_size = MAX_SZ1( params->agegroup0_buffer_bytesize * MAX_PTHREADS );
} else { max_size = (5 * max_size)/2;
//
if (max_size > 64 * ONE_MEG_BINARY) { // WTF? This silliness probably needs to Just Die. XXX BUGGO FIXME. -- 2011-11-01 CrT
max_size = 64 * ONE_MEG_BINARY;
}
}
ag =
heap->agegroup[age] = MALLOC_CHUNK( Agegroup );
ag->heap = heap;
ag->age = age+1;
ag->cleanings = 0;
ag->ratio = ratio;
//
ag->last_cleaning_count_of_younger_agegroup
=
0;
//
ag->tospace_ram_region = NULL;
ag->fromspace_ram_region = NULL;
ag->saved_fromspace_ram_region = NULL;
ag->coarse_inter_agegroup_pointers_map = NULL;
for (int ilk = 0; ilk < MAX_PLAIN_ILKS; ilk++) { // MAX_PLAIN_ILKS def in src/c/h/sibid.h
//
ag->sib[ ilk ] = MALLOC_CHUNK( Sib );
//
ag->sib[ ilk ]->tospace_bytesize = 0;
ag->sib[ ilk ]->requested_sib_buffer_bytesize = 0;
ag->sib[ ilk ]->soft_max_bytesize = max_size;
//
ag->sib[ ilk ]->id = MAKE_SIBID( age+1, ilk+1, 0);
}
for (int ilk = 0; ilk < MAX_HUGE_ILKS; ilk++) { // MAX_HUGE_ILKS def in src/c/h/sibid.h
//
ag->hugechunks[ ilk ] = NULL; // ilk = 0 == CODE__HUGE_ILK def in src/c/h/sibid.h
}
}
for (int age = 0; age < params->active_agegroups; age++) {
//
int k = (age == params->active_agegroups -1)
? age
: age+1;
for (int ilk = 0; ilk < MAX_PLAIN_ILKS; ilk++) {
//
heap->agegroup[ age ]->sib[ ilk ]->sib_for_promoted_chunks
=
heap->agegroup[ k ]->sib[ ilk ];
}
}
heap->oldest_agegroup_keeping_idle_fromspace_buffers
=
params->oldest_agegroup_keeping_idle_fromspace_buffers;
heap->active_agegroups = params->active_agegroups;
//
heap->agegroup0_cleanings_done = 0;
heap->hugechunk_ramregion_count = 0;
heap->hugechunk_ramregions = NULL;
//
heap->hugechunk_freelist = MALLOC_CHUNK( Hugechunk );
heap->hugechunk_freelist->chunk = (Punt)0;
//
heap->hugechunk_freelist->bytesize = 0;
heap->hugechunk_freelist->hugechunk_state = FREE_HUGECHUNK;
heap->hugechunk_freelist->prev = heap->hugechunk_freelist;
//
heap->hugechunk_freelist->next = heap->hugechunk_freelist;
heap->weak_pointers_forwarded_during_cleaning = NULL;
// Initialize new space:
//
heap->multipage_ram_region = multipage_ram_region;
//
heap->agegroup0_buffer = agegroup0_buffer;
//
heap->agegroup0_buffer_bytesize = params->agegroup0_buffer_bytesize
* MAX_PTHREADS; // "* MAX_PTHREADS" because it gets partitioned into MAX_PTHREADS buffers by
// partition_agegroup0_buffer_between_pthreads() in src/c/heapcleaner/pthread-heapcleaner-stuff.c
//
set_book2sibid_entries_for_range (
//
book_to_sibid__global,
(Val*) book_to_sibid__global,
BYTESIZE_OF_MULTIPAGE_RAM_REGION( heap->multipage_ram_region ),
NEWSPACE_SIBID
);
#ifdef VERBOSE
debug_say ("NewSpace = [%#x, %#x:%#x), %d bytes\n",
heap->agegroup0_buffer, HEAP_ALLOCATION_LIMIT( heap ),
(Val_Sized_Unt)(heap->agegroup0_buffer)+params->agegroup0_buffer_bytesize, params->agegroup0_buffer_bytesize);
#endif
clear_cleaner_statistics( heap ); // clear_cleaner_statistics def in src/c/heapcleaner/heapcleaner-initialization.c
//
if (heapcleaner_statistics_fd__global > 0) {
//
Cleaner_Statistics_Header header; // Cleaner_Statistics_Header is from src/c/h/heapcleaner-statistics-2.h
//
ZERO_BIGCOUNTER( &heap->total_bytes_allocated );
//
header.mask = STATMASK_ALLOC
| STATMASK_NGENS
| STATMASK_START
| STATMASK_STOP;
header.is_new_runtime = 1;
//
header.agegroup0_buffer_bytesize = params->agegroup0_buffer_bytesize;
header.active_agegroups = params->active_agegroups;
//
{ struct timeval tv;
//
gettimeofday ( &tv, NULL);
//
header.start_time.seconds = tv.tv_sec;
header.start_time.uSeconds = tv.tv_usec;
};
//
write( heapcleaner_statistics_fd__global, (char*)&header, sizeof( Cleaner_Statistics_Header ) );
}
if (is_boot) {
//
// Create agegroup 1's to-space:
//
for (int ilk = 0; ilk < MAX_PLAIN_ILKS; ilk++) {
//
heap->agegroup[ 0 ]->sib[ ilk ]->tospace_bytesize
=
BOOKROUNDED_BYTESIZE( 2 * heap->agegroup0_buffer_bytesize );
}
if (allocate_and_partition_an_agegroup( heap->agegroup[0] ) == FAILURE) die ("unable to allocate initial agegroup 1 buffer\n");
for (int ilk = 0; ilk < MAX_PLAIN_ILKS; ilk++) {
//
heap->agegroup[ 0 ]->sib[ ilk ]->end_of_fromspace_oldstuff
=
heap->agegroup[ 0 ]->sib[ ilk ]->tospace;
}
}
// Initialize the cleaner-related
// parts of the Mythryl state:
//
task->heap = heap;
task->heap_allocation_pointer = (Val*) task->heap->agegroup0_buffer;
#if NEED_SOFTWARE_GENERATED_PERIODIC_EVENTS
//
reset_heap_allocation_limit_for_software_generated_periodic_events( task );
#else
task->heap_allocation_limit = HEAP_ALLOCATION_LIMIT( heap );
#endif
} // fun set_up_heap
void set_up_heap ( // Create and initialize the heap.
// ===========
//
Task* task,
Bool is_boot,
Heapcleaner_Args* params
) {
// We are called (only) from
//
// make_task()
// in
// src/c/main/runtime-state.c
int max_size = 0; // Initialized only to suppress a gcc -Wall warning.
Heap* heap;
Agegroup* ag;
Quire* quire;
Val* agegroup0_master_buffer;
// Default any parameters unspecified by user:
//
if (params->agegroup0_buffer_bytesize == 0) params->agegroup0_buffer_bytesize = DEFAULT_AGEGROUP0_BUFFER_BYTESIZE; // From src/c/h/runtime-configuration.h
if (params->active_agegroups < 0) params->active_agegroups = DEFAULT_ACTIVE_AGEGROUPS; // From src/c/h/runtime-configuration.h
if (params->oldest_agegroup_retaining_fromspace_sibs_between_heapcleanings < 0) {
params->oldest_agegroup_retaining_fromspace_sibs_between_heapcleanings = DEFAULT_OLDEST_AGEGROUP_RETAINING_FROMSPACE_SIBS_BETWEEN_HEAPCLEANINGS; // From src/c/h/runtime-configuration.h
}
// First we initialize the underlying memory system:
//
set_up_quire_os_interface (); // set_up_quire_os_interface def in src/c/ram/get-quire-from-mach.c
// set_up_quire_os_interface def in src/c/ram/get-quire-from-mmap.c
// set_up_quire_os_interface def in src/c/ram/get-quire-from-win32.c
// Allocate a ram region to hold
// the book_to_sibid__global and agegroup0 buffer:
//
{ long book2sibid_bytesize;
#ifdef TWO_LEVEL_MAP
#error two level map not supported
#else
book2sibid_bytesize = BOOK2SIBID_TABLE_SIZE_IN_SLOTS * sizeof( Sibid );
#endif
quire = obtain_quire_from_os(
//
MAX_HOSTTHREADS * params->agegroup0_buffer_bytesize
+
book2sibid_bytesize
);
if (quire == NULL) die ("Unable to allocate ram region for book_to_sibid__global");
book_to_sibid__global = (Sibid*) BASE_ADDRESS_OF_QUIRE( quire );
agegroup0_master_buffer = (Val*) (((Vunt)book_to_sibid__global) + book2sibid_bytesize);
}
// Initialize the book_to_sibid__global:
//
#ifdef TWO_LEVEL_MAP
#error two level map not supported
#else
for (int i = 0; i < BOOK2SIBID_TABLE_SIZE_IN_SLOTS; i++) {
//
book_to_sibid__global[ i ] = UNMAPPED_BOOK_SIBID;
}
#endif
// Initialize heap descriptor:
//
heap = MALLOC_CHUNK(Heap);
//
memset ((char*)heap, 0, sizeof(Heap));
//
for (int age = 0; age < MAX_AGEGROUPS; age++) {
//
if (age == 0) { max_size = MAX_SZ1( params->agegroup0_buffer_bytesize * MAX_HOSTTHREADS ); // MAX_SZ1 just multiplies by 6 (why??) -- def in src/c/h/runtime-configuration.h
} else { max_size = (5 * max_size)/2;
//
if (max_size > 64 * ONE_MEG_BINARY) { // WTF? This silliness probably needs to Just Die. XXX BUGGO FIXME. -- 2011-11-01 CrT
max_size = 64 * ONE_MEG_BINARY;
}
}
ag =
heap->agegroup[ age ] = MALLOC_CHUNK( Agegroup );
ag->heap = heap;
ag->age = age + 1;
ag->heapcleanings_count = 0;
ag->target_heapcleaning_frequency_ratio
=
default_agegroup_size_ratio__local[ age ];
ag->heapcleanings_count_of_younger_agegroup_during_last_heapcleaning
=
0;
//
ag->tospace_quire = NULL;
ag->fromspace_quire = NULL;
ag->retained_fromspace_quire = NULL;
ag->coarse_inter_agegroup_pointers_map = NULL;
for (int s = 0; s < MAX_PLAIN_SIBS; s++) { // MAX_PLAIN_SIBS def in src/c/h/sibid.h
//
ag->sib[ s ] = MALLOC_CHUNK( Sib );
//
ag->sib[ s ]->tospace.bytesize = 0;
ag->sib[ s ]->requested_extra_free_bytes = 0;
ag->sib[ s ]->soft_max_bytesize = max_size;
//
ag->sib[ s ]->id = MAKE_SIBID( age+1, s+1, 0);
}
for (int s = 0; s < MAX_HUGE_SIBS; s++) { // MAX_HUGE_SIBS def in src/c/h/sibid.h
//
ag->hugechunks[ s ] = NULL; // s = 0 == CODE__HUGE_SIB def in src/c/h/sibid.h
}
}
for (int a = 0; a < params->active_agegroups; a++) {
//
int k = (a == params->active_agegroups -1)
? a
: a+1;
for (int s = 0; s < MAX_PLAIN_SIBS; s++) {
//
heap->agegroup[ a ]->sib[ s ]->sib_for_promoted_chunks
=
heap->agegroup[ k ]->sib[ s ];
heap->agegroup[ a ]->sib[ s ]->current_bytes_in_use = 0; // This field is only for display/debugging; it plays no algorithmic role.
heap->agegroup[ a ]->sib[ s ]->previous_bytes_in_use = 0; // This field is only for display/debugging; it plays no algorithmic role.
}
}
heap->oldest_agegroup_retaining_fromspace_sibs_between_heapcleanings
=
params->oldest_agegroup_retaining_fromspace_sibs_between_heapcleanings;
heap->active_agegroups = params->active_agegroups;
//
heap->agegroup0_heapcleanings_count = 0;
heap->hugechunk_quire_count = 0;
heap->hugechunk_quires = NULL;
//
heap->hugechunk_freelist = MALLOC_CHUNK( Hugechunk );
heap->hugechunk_freelist->chunk = (Vunt)0;
//
heap->hugechunk_freelist->bytesize = 0;
heap->hugechunk_freelist->hugechunk_state = FREE_HUGECHUNK;
heap->hugechunk_freelist->prev = heap->hugechunk_freelist;
//
heap->hugechunk_freelist->next = heap->hugechunk_freelist;
//
heap->weakrefs_forwarded_during_heapcleaning = NULL;
// Initialize new space:
//
heap->quire = quire;
//
heap->agegroup0_master_buffer = agegroup0_master_buffer;
//
heap->agegroup0_master_buffer_bytesize
=
params->agegroup0_buffer_bytesize * MAX_HOSTTHREADS; // "* MAX_HOSTTHREADS" because it gets partitioned into MAX_HOSTTHREADS separate buffers by
// partition_agegroup0_buffer_between_hostthreads() in src/c/heapcleaner/hostthread-heapcleaner-stuff.c
//
set_book2sibid_entries_for_range (
//
book_to_sibid__global,
(Val*) book_to_sibid__global,
BYTESIZE_OF_QUIRE( heap->quire ),
AGEGROUP0_SIBID
);
clear_heapcleaner_statistics( heap );
//
if (heapcleaner_statistics_fd__global > 0) {
//
Cleaner_Statistics_Header header; // Cleaner_Statistics_Header is from src/c/h/heapcleaner-statistics-2.h
//
ZERO_BIGCOUNTER( &heap->total_bytes_allocated );
//
header.mask = STATMASK_ALLOC
| STATMASK_NGENS
| STATMASK_START
| STATMASK_STOP;
header.is_new_runtime = 1;
//
header.agegroup0_buffer_bytesize = params->agegroup0_buffer_bytesize;
header.active_agegroups = params->active_agegroups;
//
{ struct timeval tv;
//
gettimeofday ( &tv, NULL);
//
header.start_time.seconds = tv.tv_sec;
header.start_time.uSeconds = tv.tv_usec;
};
//
write( heapcleaner_statistics_fd__global, (char*)&header, sizeof( Cleaner_Statistics_Header ) );
}
if (is_boot) {
//
// Create agegroup 1's to-space:
//
for (int s = 0; s < MAX_PLAIN_SIBS; s++) {
//
heap->agegroup[ 0 ]->sib[ s ]->tospace.bytesize
=
BOOKROUNDED_BYTESIZE( 2 * (heap->agegroup0_master_buffer_bytesize / MAX_HOSTTHREADS) );
}
if (set_up_tospace_sib_buffers_for_agegroup( heap->agegroup[0] ) == FALSE) die ("unable to allocate initial agegroup 1 buffer\n");
for (int s = 0; s < MAX_PLAIN_SIBS; s++) {
//
heap->agegroup[ 0 ]->sib[ s ]->fromspace.seniorchunks_end
=
heap->agegroup[ 0 ]->sib[ s ]->tospace.start;
}
}
// Initialize the cleaner-related
// parts of the Mythryl state:
//
task->heap = heap;
task->heap_allocation_buffer = task->heap->agegroup0_master_buffer;
task->heap_allocation_pointer = task->heap->agegroup0_master_buffer;
task->heap_allocation_buffer_bytesize = heap->agegroup0_master_buffer_bytesize / MAX_HOSTTHREADS;
#if NEED_SOFTWARE_GENERATED_PERIODIC_EVENTS
//
reset_heap_allocation_limit_for_software_generated_periodic_events( task );
#else
task->heap_allocation_limit
=
HEAP_ALLOCATION_LIMIT( task );
#endif
} // fun set_up_heap