mirror of
https://github.com/YosysHQ/yosys
synced 2025-06-07 06:33:24 +00:00
d0b9a0cb98
Calling `throw dst_end_of_data_exception()` when the desired number of cycles has been reached means that the fst reader can't tidy up after itself and leads to memory leaks. This doesn't happen when the `-stop` flag is used because the `Yosys::FstData` struct tracks the end time and skips the outer callback if the simulation has gone past the desired end time. Move cycle checking into the inner callback along with the time checking means that the outer callback no longer needs to throw an exception in order to stop checking further values, while still allowing the fst reader to finish reading and deallocate memory.
86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
/*
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* yosys -- Yosys Open SYnthesis Suite
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*
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* Copyright (C) 2022 Miodrag Milanovic <micko@yosyshq.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#ifndef FSTDATA_H
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#define FSTDATA_H
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#include "kernel/yosys.h"
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#include "libs/fst/fstapi.h"
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YOSYS_NAMESPACE_BEGIN
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typedef std::function<void(uint64_t)> CallbackFunction;
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struct fst_end_of_data_exception { };
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struct FstVar
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{
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fstHandle id;
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std::string name;
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bool is_alias;
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bool is_reg;
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std::string scope;
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int width;
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};
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class FstData
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{
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public:
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FstData(std::string filename);
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~FstData();
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uint64_t getStartTime();
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uint64_t getEndTime();
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std::vector<FstVar>& getVars() { return vars; };
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void reconstruct_callback_attimes(uint64_t pnt_time, fstHandle pnt_facidx, const unsigned char *pnt_value, uint32_t plen);
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void reconstructAllAtTimes(std::vector<fstHandle> &signal, uint64_t start_time, uint64_t end_time, unsigned int end_cycle, CallbackFunction cb);
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std::string valueOf(fstHandle signal);
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fstHandle getHandle(std::string name);
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dict<int,fstHandle> getMemoryHandles(std::string name);
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double getTimescale() { return timescale; }
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const char *getTimescaleString() { return timescale_str.c_str(); }
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private:
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void extractVarNames();
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struct fstReaderContext *ctx;
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std::vector<FstVar> vars;
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std::map<fstHandle, FstVar> handle_to_var;
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std::map<std::string, fstHandle> name_to_handle;
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std::map<std::string, dict<int, fstHandle>> memory_to_handle;
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std::map<fstHandle, std::string> last_data;
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uint64_t last_time;
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std::map<fstHandle, std::string> past_data;
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uint64_t past_time;
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double timescale;
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std::string timescale_str;
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uint64_t start_time;
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uint64_t end_time;
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unsigned int last_cycle;
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unsigned int curr_cycle;
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CallbackFunction callback;
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std::vector<fstHandle> clk_signals;
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bool all_samples;
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std::string tmp_file;
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};
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YOSYS_NAMESPACE_END
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#endif
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