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ruby: Use the const serialize interface in RubySystem

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The new serialization code (kudos to Tim Jones) moves all of the state
mangling in RubySystem to memWriteback. This makes it possible to use
the new const serialization interface.

This changeset moves the cache recorder cleanup from the checkpoint()
method to drainResume() to make checkpointing truly constant and
updates the checkpointing code to use the new interface.
This commit is contained in:
Andreas Sandberg 2015-08-28 10:58:44 +01:00
parent fc3d34a488
commit e9d6bf5e35
2 changed files with 18 additions and 10 deletions
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15
src/mem/ruby/system/System.cc
View file

@ -235,7 +235,7 @@ RubySystem::writeCompressedTrace(uint8_t *raw_data, string filename,
}
void
RubySystem::serializeOld(CheckpointOut &cp)
RubySystem::serialize(CheckpointOut &cp) const
{
// Store the cache-block size, so we are able to restore on systems with a
// different cache-block size. CacheRecorder depends on the correct
@ -259,10 +259,17 @@ RubySystem::serializeOld(CheckpointOut &cp)
SERIALIZE_SCALAR(cache_trace_file);
SERIALIZE_SCALAR(cache_trace_size);
}
// Now finished with the cache recorder.
delete m_cache_recorder;
m_cache_recorder = NULL;
void
RubySystem::drainResume()
{
// Delete the cache recorder if it was created in memWriteback()
// to checkpoint the current cache state.
if (m_cache_recorder) {
delete m_cache_recorder;
m_cache_recorder = NULL;
}
}
void

13
src/mem/ruby/system/System.hh
View file

@ -95,8 +95,9 @@ class RubySystem : public ClockedObject
void resetStats();
void memWriteback();
void serializeOld(CheckpointOut &cp) M5_ATTR_OVERRIDE;
void serialize(CheckpointOut &cp) const M5_ATTR_OVERRIDE;
void unserialize(CheckpointIn &cp) M5_ATTR_OVERRIDE;
void drainResume() M5_ATTR_OVERRIDE;
void process();
void startup();
bool functionalRead(Packet *ptr);
@ -121,11 +122,11 @@ class RubySystem : public ClockedObject
uint64 cache_trace_size,
uint64 block_size_bytes);
void readCompressedTrace(std::string filename,
uint8_t *&raw_data,
uint64& uncompressed_trace_size);
void writeCompressedTrace(uint8_t *raw_data, std::string file,
uint64 uncompressed_trace_size);
static void readCompressedTrace(std::string filename,
uint8_t *&raw_data,
uint64& uncompressed_trace_size);
static void writeCompressedTrace(uint8_t *raw_data, std::string file,
uint64 uncompressed_trace_size);
private:
// configuration parameters