diff options
Diffstat (limited to 'src/include/kernel/heapmgr.H')
| -rw-r--r-- | src/include/kernel/heapmgr.H | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/src/include/kernel/heapmgr.H b/src/include/kernel/heapmgr.H index 6db70569b..bf4fe1cc7 100644 --- a/src/include/kernel/heapmgr.H +++ b/src/include/kernel/heapmgr.H @@ -5,7 +5,7 @@ /* */ /* OpenPOWER HostBoot Project */ /* */ -/* Contributors Listed Below - COPYRIGHT 2010,2015 */ +/* Contributors Listed Below - COPYRIGHT 2010,2017 */ /* [+] International Business Machines Corp. */ /* */ /* */ @@ -28,6 +28,7 @@ #include <stdint.h> #include <util/lockfree/stack.H> #include <builtins.h> +#include <kernel/types.h> extern "C" void kernel_execute_decrementer(); @@ -53,6 +54,11 @@ class HeapManager public: enum { + CHUNK_HEADER_PLUS_RESERVED = 9, //!< 8 Bytes header + 1 byte valid + }; + + enum + { BUCKETS = 12, //!< number of buckets MIN_BUCKET_SIZE = 16, //!< Smallest bucket size FIB_START_INCR = 16, //!< Seed for the Fibonacci series @@ -69,7 +75,10 @@ class HeapManager BUCKET_SIZE10 = BUCKET_SIZE9 + BUCKET_SIZE8, BUCKET_SIZE11 = BUCKET_SIZE10 + BUCKET_SIZE9, - MAX_SMALL_ALLOC_SIZE = BUCKET_SIZE11 - 8,// last bucket size-8 + // last bucket size, 8 byte chunk header + 1 byte for consistency + // checking + MAX_SMALL_ALLOC_SIZE = BUCKET_SIZE11 - CHUNK_HEADER_PLUS_RESERVED, + }; friend class CpuManager; @@ -136,9 +145,11 @@ class HeapManager { struct { - char free:8; //!< Is chunk free - char coalesce:8; //!< Is chunk being coalesced - uint64_t bucket:48; //!< Which bucket this chunk belongs to + uint8_t free; //!< F=free, A=allocated + uint8_t coalesce; //!< C=chunk being coalesced + uint16_t size; //!< size of the data area + tid_t allocator; //!< task_id of allocating thread + uint16_t bucket; //!< Which bucket this chunk belongs to } PACKED; chunk_t* next; //!< Next chunk (for unallocated chunks only) |
