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#include "Core.h"

#ifdef UPP_HEAP

#ifdef PLATFORM_POSIX
#include <sys/mman.h>
#endif

NAMESPACE_UPP

#include "HeapImp.h"

static MemoryProfile *sPeak;

void *MemoryAllocPermanentRaw(size_t size)
{
if(size >= 256)
return malloc(size);
static byte *ptr = NULL;
static byte *limit = NULL;
if(ptr + size >= limit) {
ptr = (byte *)AllocRaw4KB(size);
limit = ptr + 4096;
}
void *p = ptr;
ptr += size;
return p;
}

void *MemoryAllocPermanent(size_t size)
{
Mutex::Lock __(Heap::mutex);
return MemoryAllocPermanentRaw(size);
}

MemoryProfile *PeakMemoryProfile()
{
if(sPeak)
return sPeak;
sPeak = (MemoryProfile *)MemoryAllocPermanent(sizeof(MemoryProfile));
memset(sPeak, 0, sizeof(MemoryProfile));
return NULL;
}

void DoPeakProfile()
{
if(sPeak)
heap.Make(*sPeak);
}

void OutOfMemoryPanic(size_t size)
{
char h[200];
sprintf(h, "Out of memory!\nRequested size: %lld B\nU++ allocated memory: %d KB",
(long long)size, MemoryUsedKb());
Panic(h);
}

int sKB;

int MemoryUsedKb() { return sKB; }

void *SysAllocRaw(size_t size, int reqsize)
{
sKB += int(((size + 4095) & ~4095) >> 10);
#ifdef PLATFORM_WIN32
void *ptr = VirtualAlloc(NULL, size, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE);
#else
#ifdef PLATFORM_LINUX
void *ptr = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
#else
void *ptr = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
#endif
if(ptr == MAP_FAILED)
ptr = NULL;
#endif
if(!ptr)
OutOfMemoryPanic((size_t)reqsize);
DoPeakProfile();
return ptr;
}

void SysFreeRaw(void *ptr, size_t size)
{
sKB -= int(((size + 4095) & ~4095) >> 10);
#ifdef PLATFORM_WIN32
VirtualFree(ptr, 0, MEM_RELEASE);
#else
munmap(ptr, size);
#endif
}

int s4kb__;
int s64kb__;

void *AllocRaw4KB(int reqsize)
{
static int left;
static byte *ptr;
static int n = 32;
if(left == 0) {
left = n >> 5;
ptr = (byte *)SysAllocRaw(left * 4096, reqsize);
}
n = n + 1;
if(n > 4096) n = 4096;
void *p = ptr;
ptr += 4096;
left--;
s4kb__++;
DoPeakProfile();
return p;
}

void *AllocRaw64KB(int reqsize)
{
static int left;
static byte *ptr;
static int n = 32;
if(left == 0) {
left = n >> 5;
ptr = (byte *)SysAllocRaw(left * 65536, reqsize);
}
n = n + 1;
if(n > 256) n = 256;
void *p = ptr;
ptr += 65536;
left--;
s64kb__++;
DoPeakProfile();
return p;
}

void HeapPanic(const char *text, void *pos, int size)
{
RLOG("\n\n" << text << "\n");
HexDump(VppLog(), pos, size, 64);
Panic(text);
}

#ifdef HEAPDBG

void Heap::DbgFreeFill(void *p, size_t size)
{
size_t count = size >> 2;
dword *ptr = (dword *)p;
while(count--)
*ptr++ = 0x65657246;
}

void Heap::DbgFreeCheck(void *p, size_t size)
{
size_t count = size >> 2;
dword *ptr = (dword *)p;
while(count--)
if(*ptr++ != 0x65657246)
HeapPanic("Writes to freed blocks detected", p, (int)(uintptr_t)size);
}

void *Heap::DbgFreeCheckK(void *p, int k)
{
Page *page = (Page *)((uintptr_t)p & ~(uintptr_t)4095);
ASSERT((byte *)page + sizeof(Page) <= (byte *)p && (byte *)p < (byte *)page + 4096);
ASSERT((4096 - ((uintptr_t)p & (uintptr_t)4095)) % Ksz(k) == 0);
ASSERT(page->klass == k);
DbgFreeCheck((FreeLink *)p + 1, Ksz(k) - sizeof(FreeLink));
return p;
}

void Heap::DbgFreeFillK(void *p, int k)
{
DbgFreeFill((FreeLink *)p + 1, Ksz(k) - sizeof(FreeLink));
}

#endif


void Heap::Make(MemoryProfile& f)
{
Mutex::Lock __(mutex);
memset(&f, 0, sizeof(MemoryProfile));
for(int i = 0; i < NKLASS; i++) {
int qq = Ksz(i) / 4;
Page *p = work[i]->next;
while(p != work[i]) {
f.allocated[qq] += p->active;
f.fragmented[qq] += p->Count() - p->active;
p = p->next;
}
p = full[i]->next;
while(p != full[i]) {
f.allocated[qq] += p->active;
p = p->next;
}
}
int ii = 0;
int fi = 0;
DLink *m = big->next;
while(m != big) {
size_t sz = ((BigHdr *)((byte *)m + BIGHDRSZ - sizeof(Header)))->size;
f.large_count++;
f.large_total += sz;
if(ii < 4096)
f.large_size[ii++] = sz;
m = m->next;
}
m = large->next;
while(m != large) {
Header *h = (Header *)((byte *)m + LARGEHDRSZ);
while(h->size) {
if(h->free) {
f.large_free_count++;
f.large_free_total += h->size;
if(fi < 4096)
f.large_free_size[fi++] = h->size;
}
else {
f.large_count++;
f.large_total += h->size;
if(ii < 4096)
f.large_size[ii++] = h->size;
}
h = h->Next();
}
m = m->next;
}
}

MemoryProfile::MemoryProfile()
{
heap.Make(*this);
}

#ifdef flagHEAPSTAT
int stat[65536];
int bigstat;

void Heap::Stat(size_t sz)
{
if(sz < 65536)
stat[sz]++;
else
bigstat++;
}

EXITBLOCK {
int sum = 0;
for(int i = 0; i < 65536; i++)
sum += stat[i];
sum += bigstat;
int total = 0;
VppLog() << Sprintf("Allocation statistics: (total allocations: %d)\n", sum);
for(int i = 0; i < 65536; i++)
if(stat[i]) {
total += stat[i];
VppLog() << Sprintf("%5d %8dx %2d%%, total %8dx %2d%%\n",
i, stat[i], 100 * stat[i] / sum, total, 100 * total / sum);
}
if(bigstat) {
total += bigstat;
VppLog() << Sprintf(">64KB %8dx %2d%%, total %8dx %2d%%\n",
bigstat, 100 * bigstat / sum, total, 100 * total / sum);
}
}
#endif

END_UPP_NAMESPACE

#endif

Change log

r4570 by cxl on Feb 10, 2012   Diff
.Core: Added 'B' (Bytes) in
OutOfMemoryPanic
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Older revisions

r4471 by cxl on Jan 26, 2012   Diff
Core: Out of memory panic now displays
info about requested block size and
allocated memory (RM #240)
r300 by mdelfede on Jun 16, 2008   Diff
new uvs2 releases : uppsrc-2598
tutorial-38  examples-141
reference-113
r298 by mdelfede on Jun 14, 2008   Diff
new uvs2 releases : uppsrc-2593
tutorial-38  examples-141
reference-113
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