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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,32 @@ | ||
| # System Functions | ||
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| Some parts of the C++ standard library that interact with the host system are restricted or unavailable in services. | ||
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| ## I/O | ||
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| Only stdout and stderr are available. They both write to a single merged stream which is in included the transaction trace. stdin is not supported. | ||
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| Supported APIs: | ||
| - `write` | ||
| - `printf` family | ||
| - `std::cout`, `std::cerr`, `std::clog` | ||
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| ## Clocks | ||
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| UTC, monotonic, and CPU clocks are available to subjective services. The monotonic clock is only guaranteed to be monotonic within a block. The CPU clock measures CPU time spent on the current transaction. | ||
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| Supported APIs: | ||
| - `clock_gettime` with `CLOCK_REALITME`, `CLOCK_MONOTONIC`, or `CLOCK_PROCESS_CPUTIME_ID` | ||
| - `clock` | ||
| - `time` | ||
| - `std::chrono::system_clock` | ||
| - `std::chrono::monotonic_clock` | ||
| - `std::chrono::high_resolution_clock` | ||
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| ## Unavailable Functionality | ||
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| - Filesystem | ||
| - Nondeterministic random numbers | ||
| - Concurrency | ||
| - Exceptions | ||
| - `setjmp`/`longjmp` |
Submodule eos-vm
updated
21 files
| +15 −0 | include/eosio/vm/bitcode_writer.hpp | |
| +17 −15 | include/eosio/vm/execution_context.hpp | |
| +159 −38 | include/eosio/vm/interpret_visitor.hpp | |
| +15 −0 | include/eosio/vm/null_writer.hpp | |
| +15 −7 | include/eosio/vm/opcodes_def.hpp | |
| +9 −0 | include/eosio/vm/options.hpp | |
| +36 −0 | include/eosio/vm/parser.hpp | |
| +64 −3 | include/eosio/vm/softfloat.hpp | |
| +2 −0 | include/eosio/vm/types.hpp | |
| +1 −1 | include/eosio/vm/wasm_stack.hpp | |
| +128 −13 | include/eosio/vm/x86_64.hpp | |
| +277 −93 | tests/spec/conversions_tests.cpp | |
| +911 −911 | tests/spec/f32_tests.cpp | |
| +911 −911 | tests/spec/f64_tests.cpp | |
| +85 −85 | tests/spec/float_exprs_tests.cpp | |
| +31 −31 | tests/spec/float_literals_tests.cpp | |
| +15 −15 | tests/spec/float_memory_tests.cpp | |
| +1 −1 | tests/spec/float_misc_tests.cpp | |
| +15 −0 | tests/spec/i32_tests.cpp | |
| +230 −205 | tests/spec/i64_tests.cpp | |
| +18 −3 | tests/spec_test_generator/spec_test_generator.cpp |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,68 @@ | ||
| #pragma once | ||
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| #include <chrono> | ||
| #include <condition_variable> | ||
| #include <functional> | ||
| #include <mutex> | ||
| #include <thread> | ||
| #include <vector> | ||
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| #include <time.h> | ||
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| namespace psibase | ||
| { | ||
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| struct CpuClock | ||
| { | ||
| using rep = std::int64_t; | ||
| using period = std::ratio<1, 1000000000>; | ||
| using duration = std::chrono::duration<rep, period>; | ||
| using time_point = std::chrono::time_point<CpuClock>; | ||
| static constexpr bool is_steady = false; | ||
| static time_point now(clockid_t clock = CLOCK_THREAD_CPUTIME_ID); | ||
| }; | ||
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| class Watchdog; | ||
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| class WatchdogManager | ||
| { | ||
| public: | ||
| WatchdogManager(); | ||
| ~WatchdogManager(); | ||
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| private: | ||
| friend class Watchdog; | ||
| void add(Watchdog* wd); | ||
| void remove(Watchdog* wd); | ||
| void run(); | ||
| std::mutex mutex; | ||
| std::condition_variable cond; | ||
| std::vector<Watchdog*> children; | ||
| bool done = false; | ||
| std::thread worker; | ||
| }; | ||
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| class Watchdog | ||
| { | ||
| public: | ||
| Watchdog(WatchdogManager& m, std::function<void()> f); | ||
| ~Watchdog(); | ||
| void setLimit(CpuClock::duration dur); | ||
| void pause(); | ||
| void resume(); | ||
| CpuClock::duration elapsed(); | ||
| void interrupt(); | ||
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| private: | ||
| friend class WatchdogManager; | ||
| // Called with manager mutex held | ||
| CpuClock::duration wait_duration(); | ||
| WatchdogManager* manager; | ||
| bool paused; | ||
| CpuClock::duration elapsedOrStart; | ||
| CpuClock::duration limit = CpuClock::duration::max(); | ||
| clockid_t cpuclock; | ||
| std::function<void()> handler; | ||
| }; | ||
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| } // namespace psibase |
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