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Added some debug helper. Hopefully they give more insight to Stephan's problem (bug #77/#78).

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15767 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2005-12-31 14:31:31 +00:00
parent 545611c7eb
commit e075b5a32e
1 changed files with 14 additions and 2 deletions
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16
src/system/kernel/cache/block_cache.cpp vendored
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@ -37,6 +37,9 @@
# define TRACE(x) ;
#endif
// This macro is used for fatal situations that are acceptable in a running
// system, like out of memory situations - should only panic for debugging.
#define FATAL(x) panic x
struct cache_transaction {
cache_transaction();
@ -238,6 +241,9 @@ block_cache::Free(void *address)
return;
block_range *range = GetRange(address);
if (range == NULL)
panic("no range for address %p\n", address);
ASSERT(range != NULL);
range->Free(this, address);
@ -282,11 +288,14 @@ cached_block *
block_cache::NewBlock(off_t blockNumber)
{
cached_block *block = new cached_block;
if (block == NULL)
if (block == NULL) {
FATAL(("could not allocate block!\n"));
return NULL;
}
block_range *range = GetFreeRange();
if (range == NULL) {
FATAL(("could not get range!\n"));
delete block;
return NULL;
}
@ -521,6 +530,7 @@ get_cached_block(block_cache *cache, off_t blockNumber, bool &allocated, bool re
if (read_pos(cache->fd, blockNumber * blockSize, block->data, blockSize) < blockSize) {
cache->FreeBlock(block);
FATAL(("could not read block %Ld\n", blockNumber));
return NULL;
}
}
@ -593,6 +603,7 @@ get_writable_cached_block(block_cache *cache, off_t blockNumber, off_t base, off
// we already have data, so we need to save it
block->original = cache->Allocate();
if (block->original == NULL) {
FATAL(("could not allocate original\n"));
put_cached_block(cache, block);
return NULL;
}
@ -604,6 +615,7 @@ get_writable_cached_block(block_cache *cache, off_t blockNumber, off_t base, off
block->parent_data = cache->Allocate();
if (block->parent_data == NULL) {
// ToDo: maybe we should just continue the current transaction in this case...
FATAL(("could not allocate parent\n"));
put_cached_block(cache, block);
return NULL;
}
@ -635,7 +647,7 @@ write_cached_block(block_cache *cache, cached_block *block, bool deleteTransacti
ssize_t written = write_pos(cache->fd, block->block_number * blockSize, data, blockSize);
if (written < blockSize) {
dprintf("could not write back block %Ld (%s)\n", block->block_number, strerror(errno));
FATAL(("could not write back block %Ld (%s)\n", block->block_number, strerror(errno)));
return B_IO_ERROR;
}