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@@ -18,22 +18,9 @@ Documentation for GNU make jobserver
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http://make.mad-scientist.net/papers/jobserver-implementation/
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-Fixes https://github.com/ninja-build/ninja/issues/1139
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----
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- configure.py | 2 +
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- src/build.cc | 63 ++++++++----
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- src/build.h | 3 +
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- src/tokenpool-gnu-make.cc | 211 ++++++++++++++++++++++++++++++++++++++
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- src/tokenpool-none.cc | 27 +++++
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- src/tokenpool.h | 26 +++++
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- 6 files changed, 310 insertions(+), 22 deletions(-)
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- create mode 100644 src/tokenpool-gnu-make.cc
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- create mode 100644 src/tokenpool-none.cc
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- create mode 100644 src/tokenpool.h
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-
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--- a/configure.py
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+++ b/configure.py
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-@@ -519,11 +519,13 @@ for name in ['build',
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+@@ -543,11 +543,13 @@ for name in ['build',
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'state',
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'status',
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'string_piece_util',
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@@ -47,7 +34,7 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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'includes_normalize-win32',
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'msvc_helper-win32',
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'msvc_helper_main-win32']:
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-@@ -532,7 +534,9 @@ if platform.is_windows():
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+@@ -556,7 +558,9 @@ if platform.is_windows():
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objs += cxx('minidump-win32', variables=cxxvariables)
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objs += cc('getopt')
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else:
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@@ -58,17 +45,17 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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if platform.is_aix():
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objs += cc('getopt')
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if platform.is_msvc():
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-@@ -590,6 +594,7 @@ for name in ['build_log_test',
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- 'string_piece_util_test',
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- 'subprocess_test',
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- 'test',
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-+ 'tokenpool_test',
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- 'util_test']:
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- objs += cxx(name, variables=cxxvariables)
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- if platform.is_windows():
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+@@ -639,6 +643,7 @@ if gtest_src_dir:
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+ 'string_piece_util_test',
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+ 'subprocess_test',
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+ 'test',
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++ 'tokenpool_test',
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+ 'util_test',
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+ ]
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+ if platform.is_windows():
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--- a/src/build.cc
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+++ b/src/build.cc
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-@@ -35,6 +35,7 @@
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+@@ -39,6 +39,7 @@
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#include "state.h"
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#include "status.h"
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#include "subprocess.h"
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@@ -76,10 +63,12 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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#include "util.h"
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using namespace std;
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-@@ -47,8 +48,9 @@ struct DryRunCommandRunner : public Comm
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+@@ -50,24 +51,29 @@ struct DryRunCommandRunner : public Comm
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+ virtual ~DryRunCommandRunner() {}
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// Overridden from CommandRunner:
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- virtual bool CanRunMore() const;
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+- virtual size_t CanRunMore() const;
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++ virtual size_t CanRunMore();
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+ virtual bool AcquireToken();
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virtual bool StartCommand(Edge* edge);
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- virtual bool WaitForCommand(Result* result);
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@@ -87,8 +76,11 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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private:
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queue<Edge*> finished_;
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-@@ -58,12 +60,16 @@ bool DryRunCommandRunner::CanRunMore() c
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- return true;
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+ };
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+
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+-size_t DryRunCommandRunner::CanRunMore() const {
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++size_t DryRunCommandRunner::CanRunMore() {
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+ return SIZE_MAX;
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}
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+bool DryRunCommandRunner::AcquireToken() {
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@@ -105,24 +97,25 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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if (finished_.empty())
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return false;
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-@@ -149,7 +155,7 @@ void Plan::EdgeWanted(const Edge* edge)
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+@@ -160,7 +166,7 @@ void Plan::EdgeWanted(const Edge* edge)
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}
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Edge* Plan::FindWork() {
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- if (ready_.empty())
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+ if (!more_ready())
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return NULL;
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- EdgeSet::iterator e = ready_.begin();
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- Edge* edge = *e;
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-@@ -448,19 +454,39 @@ void Plan::Dump() const {
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+
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+ Edge* work = ready_.top();
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+@@ -595,19 +601,39 @@ void Plan::Dump() const {
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}
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struct RealCommandRunner : public CommandRunner {
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- explicit RealCommandRunner(const BuildConfig& config) : config_(config) {}
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- virtual ~RealCommandRunner() {}
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+- virtual size_t CanRunMore() const;
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+ explicit RealCommandRunner(const BuildConfig& config);
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+ virtual ~RealCommandRunner();
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- virtual bool CanRunMore() const;
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++ virtual size_t CanRunMore();
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+ virtual bool AcquireToken();
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virtual bool StartCommand(Edge* edge);
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- virtual bool WaitForCommand(Result* result);
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@@ -157,7 +150,7 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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vector<Edge*> RealCommandRunner::GetActiveEdges() {
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vector<Edge*> edges;
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for (map<const Subprocess*, Edge*>::iterator e = subproc_to_edge_.begin();
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-@@ -471,14 +497,23 @@ vector<Edge*> RealCommandRunner::GetActi
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+@@ -618,9 +644,11 @@ vector<Edge*> RealCommandRunner::GetActi
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void RealCommandRunner::Abort() {
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subprocs_.Clear();
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@@ -165,28 +158,35 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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+ tokens_->Clear();
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}
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- bool RealCommandRunner::CanRunMore() const {
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-- size_t subproc_number =
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-- subprocs_.running_.size() + subprocs_.finished_.size();
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-- return (int)subproc_number < config_.parallelism
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-- && ((subprocs_.running_.empty() || config_.max_load_average <= 0.0f)
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-- || GetLoadAverage() < config_.max_load_average);
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-+ bool parallelism_limit_not_reached =
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-+ tokens_ || // ignore config_.parallelism
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-+ ((int) (subprocs_.running_.size() +
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-+ subprocs_.finished_.size()) < config_.parallelism);
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-+ return parallelism_limit_not_reached
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-+ && (subprocs_.running_.empty() ||
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-+ (max_load_average_ <= 0.0f ||
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-+ GetLoadAverage() < max_load_average_));
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-+}
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+-size_t RealCommandRunner::CanRunMore() const {
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++size_t RealCommandRunner::CanRunMore() {
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+ size_t subproc_number =
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+ subprocs_.running_.size() + subprocs_.finished_.size();
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+
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+@@ -635,6 +663,13 @@ size_t RealCommandRunner::CanRunMore() c
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+ if (capacity < 0)
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+ capacity = 0;
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+
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++ if (tokens_) {
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++ if (AcquireToken())
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++ return SIZE_MAX;
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++ else
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++ capacity = 0;
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++ }
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+
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-+bool RealCommandRunner::AcquireToken() {
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-+ return (!tokens_ || tokens_->Acquire());
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+ if (capacity == 0 && subprocs_.running_.empty())
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+ // Ensure that we make progress.
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+ capacity = 1;
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+@@ -642,24 +677,42 @@ size_t RealCommandRunner::CanRunMore() c
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+ return capacity;
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}
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++bool RealCommandRunner::AcquireToken() {
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++ return (!tokens_ || tokens_->Acquire());
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++}
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++
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bool RealCommandRunner::StartCommand(Edge* edge) {
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-@@ -486,19 +521,33 @@ bool RealCommandRunner::StartCommand(Edg
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+ string command = edge->EvaluateCommand();
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Subprocess* subproc = subprocs_.Add(command, edge->use_console());
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if (!subproc)
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return false;
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@@ -223,61 +223,17 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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result->status = subproc->Finish();
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result->output = subproc->GetOutput();
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-@@ -620,38 +669,43 @@ bool Builder::Build(string* err) {
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- // command runner.
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+@@ -790,7 +843,8 @@ bool Builder::Build(string* err) {
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// Second, we attempt to wait for / reap the next finished command.
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while (plan_.more_to_do()) {
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-- // See if we can start any more commands.
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-- if (failures_allowed && command_runner_->CanRunMore()) {
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-- if (Edge* edge = plan_.FindWork()) {
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-- if (edge->GetBindingBool("generator")) {
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-+ // See if we can start any more commands...
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-+ bool can_run_more =
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-+ failures_allowed &&
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-+ plan_.more_ready() &&
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-+ command_runner_->CanRunMore();
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-+
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-+ // ... but we also need a token to do that.
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-+ if (can_run_more && command_runner_->AcquireToken()) {
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-+ Edge* edge = plan_.FindWork();
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-+ if (edge->GetBindingBool("generator")) {
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- scan_.build_log()->Close();
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- }
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-
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-- if (!StartEdge(edge, err)) {
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-+ if (!StartEdge(edge, err)) {
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-+ Cleanup();
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-+ status_->BuildFinished();
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-+ return false;
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-+ }
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-+
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-+ if (edge->is_phony()) {
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-+ if (!plan_.EdgeFinished(edge, Plan::kEdgeSucceeded, err)) {
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- Cleanup();
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- status_->BuildFinished();
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- return false;
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- }
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--
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-- if (edge->is_phony()) {
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-- if (!plan_.EdgeFinished(edge, Plan::kEdgeSucceeded, err)) {
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-- Cleanup();
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-- status_->BuildFinished();
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-- return false;
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-- }
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-- } else {
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-- ++pending_commands;
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-- }
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--
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-- // We made some progress; go back to the main loop.
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-- continue;
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-+ } else {
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-+ ++pending_commands;
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- }
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-+
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-+ // We made some progress; go back to the main loop.
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-+ continue;
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- }
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-
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+ // See if we can start any more commands.
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+- if (failures_allowed) {
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++ bool can_run_more = failures_allowed && plan_.more_ready();
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++ if (can_run_more) {
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+ size_t capacity = command_runner_->CanRunMore();
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+ while (capacity > 0) {
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+ Edge* edge = plan_.FindWork();
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+@@ -833,7 +887,7 @@ bool Builder::Build(string* err) {
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// See if we can reap any finished commands.
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if (pending_commands) {
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CommandRunner::Result result;
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@@ -286,7 +242,7 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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result.status == ExitInterrupted) {
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Cleanup();
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status_->BuildFinished();
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-@@ -659,6 +713,10 @@ bool Builder::Build(string* err) {
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+@@ -841,6 +895,10 @@ bool Builder::Build(string* err) {
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return false;
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}
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@@ -299,7 +255,7 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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Cleanup();
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--- a/src/build.h
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+++ b/src/build.h
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-@@ -52,6 +52,9 @@ struct Plan {
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+@@ -51,6 +51,9 @@ struct Plan {
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/// Returns true if there's more work to be done.
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bool more_to_do() const { return wanted_edges_ > 0 && command_edges_ > 0; }
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@@ -309,15 +265,17 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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/// Dumps the current state of the plan.
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void Dump() const;
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-@@ -136,6 +139,7 @@ private:
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+@@ -145,7 +148,8 @@ private:
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+ /// RealCommandRunner is an implementation that actually runs commands.
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struct CommandRunner {
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virtual ~CommandRunner() {}
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- virtual bool CanRunMore() const = 0;
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+- virtual size_t CanRunMore() const = 0;
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++ virtual size_t CanRunMore() = 0;
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+ virtual bool AcquireToken() = 0;
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virtual bool StartCommand(Edge* edge) = 0;
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/// The result of waiting for a command.
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-@@ -147,7 +151,9 @@ struct CommandRunner {
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+@@ -157,7 +161,9 @@ struct CommandRunner {
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bool success() const { return status == ExitSuccess; }
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};
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/// Wait for a command to complete, or return false if interrupted.
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@@ -328,7 +286,7 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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virtual std::vector<Edge*> GetActiveEdges() { return std::vector<Edge*>(); }
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virtual void Abort() {}
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-@@ -155,7 +161,8 @@ struct CommandRunner {
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+@@ -165,7 +171,8 @@ struct CommandRunner {
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/// Options (e.g. verbosity, parallelism) passed to a build.
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struct BuildConfig {
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@@ -338,7 +296,7 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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failures_allowed(1), max_load_average(-0.0f) {}
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enum Verbosity {
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-@@ -167,6 +174,7 @@ struct BuildConfig {
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+@@ -177,6 +184,7 @@ struct BuildConfig {
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Verbosity verbosity;
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bool dry_run;
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int parallelism;
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@@ -509,13 +467,15 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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#include <assert.h>
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+#include <stdarg.h>
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+ #include <climits>
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+ #include <stdint.h>
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- #include "build_log.h"
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- #include "deps_log.h"
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-@@ -474,8 +475,9 @@ struct FakeCommandRunner : public Comman
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+@@ -521,9 +522,10 @@ struct FakeCommandRunner : public Comman
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+ max_active_edges_(1), fs_(fs) {}
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// CommandRunner impl
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- virtual bool CanRunMore() const;
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+- virtual size_t CanRunMore() const;
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++ virtual size_t CanRunMore();
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+ virtual bool AcquireToken();
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virtual bool StartCommand(Edge* edge);
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- virtual bool WaitForCommand(Result* result);
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@@ -523,8 +483,16 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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virtual vector<Edge*> GetActiveEdges();
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virtual void Abort();
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-@@ -578,6 +580,10 @@ bool FakeCommandRunner::CanRunMore() con
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- return active_edges_.size() < max_active_edges_;
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+@@ -622,13 +624,17 @@ void BuildTest::RebuildTarget(const stri
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+ builder.command_runner_.release();
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+ }
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+
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+-size_t FakeCommandRunner::CanRunMore() const {
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++size_t FakeCommandRunner::CanRunMore() {
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+ if (active_edges_.size() < max_active_edges_)
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+ return SIZE_MAX;
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+
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+ return 0;
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}
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+bool FakeCommandRunner::AcquireToken() {
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@@ -534,7 +502,7 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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bool FakeCommandRunner::StartCommand(Edge* edge) {
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assert(active_edges_.size() < max_active_edges_);
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assert(find(active_edges_.begin(), active_edges_.end(), edge)
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-@@ -649,7 +655,7 @@ bool FakeCommandRunner::StartCommand(Edg
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+@@ -720,7 +726,7 @@ bool FakeCommandRunner::StartCommand(Edg
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return true;
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}
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@@ -543,7 +511,7 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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if (active_edges_.empty())
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return false;
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-@@ -3985,3 +3991,356 @@ TEST_F(BuildTest, ValidationWithCircular
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+@@ -4380,3 +4386,355 @@ TEST_F(BuildTest, ValidationWithCircular
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EXPECT_FALSE(builder_.AddTarget("out", &err));
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EXPECT_EQ("dependency cycle: validate -> validate_in -> validate", err);
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}
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@@ -557,7 +525,7 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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+ explicit FakeTokenCommandRunner() {}
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+
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+ // CommandRunner impl
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-+ virtual bool CanRunMore() const;
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++ virtual bool CanRunMore();
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+ virtual bool AcquireToken();
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+ virtual bool StartCommand(Edge* edge);
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+ virtual bool WaitForCommand(Result* result, bool more_ready);
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@@ -572,7 +540,7 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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+ vector<bool> wait_for_command_;
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+};
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+
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-+bool FakeTokenCommandRunner::CanRunMore() const {
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++bool FakeTokenCommandRunner::CanRunMore() {
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+ if (can_run_more_.size() == 0) {
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+ EXPECT_FALSE("unexpected call to CommandRunner::CanRunMore()");
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+ return false;
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@@ -580,9 +548,8 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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+
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+ bool result = can_run_more_[0];
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+
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-+ // Unfortunately CanRunMore() isn't "const" for tests
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-+ const_cast<FakeTokenCommandRunner*>(this)->can_run_more_.erase(
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-+ const_cast<FakeTokenCommandRunner*>(this)->can_run_more_.begin()
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++ can_run_more_.erase(
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++ can_run_more_.begin()
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+ );
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+
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+ return result;
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@@ -1345,7 +1312,7 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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+}
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--- a/src/ninja.cc
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+++ b/src/ninja.cc
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-@@ -1447,6 +1447,7 @@ int ReadFlags(int* argc, char*** argv,
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+@@ -1466,6 +1466,7 @@ int ReadFlags(int* argc, char*** argv,
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// We want to run N jobs in parallel. For N = 0, INT_MAX
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// is close enough to infinite for most sane builds.
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config->parallelism = value > 0 ? value : INT_MAX;
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@@ -2139,7 +2106,7 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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+};
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--- a/CMakeLists.txt
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+++ b/CMakeLists.txt
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-@@ -112,6 +112,7 @@ add_library(libninja OBJECT
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+@@ -142,6 +142,7 @@ add_library(libninja OBJECT
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src/state.cc
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src/status.cc
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src/string_piece_util.cc
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@@ -2147,22 +2114,26 @@ Fixes https://github.com/ninja-build/ninja/issues/1139
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src/util.cc
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src/version.cc
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)
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-@@ -123,9 +124,14 @@ if(WIN32)
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+@@ -153,13 +154,17 @@ if(WIN32)
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src/msvc_helper_main-win32.cc
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src/getopt.c
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src/minidump-win32.cc
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+ src/tokenpool-gnu-make-win32.cc
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)
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+ # Build getopt.c, which can be compiled as either C or C++, as C++
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+ # so that build environments which lack a C compiler, but have a C++
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+ # compiler may build ninja.
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+ set_source_files_properties(src/getopt.c PROPERTIES LANGUAGE CXX)
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else()
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- target_sources(libninja PRIVATE src/subprocess-posix.cc)
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+- target_sources(libninja PRIVATE src/subprocess-posix.cc)
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+ target_sources(libninja PRIVATE
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+ src/subprocess-posix.cc
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+ src/tokenpool-gnu-make-posix.cc
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+ )
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if(CMAKE_SYSTEM_NAME STREQUAL "OS400" OR CMAKE_SYSTEM_NAME STREQUAL "AIX")
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target_sources(libninja PRIVATE src/getopt.c)
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- endif()
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-@@ -204,6 +210,7 @@ if(BUILD_TESTING)
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+ # Build getopt.c, which can be compiled as either C or C++, as C++
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+@@ -286,6 +291,7 @@ if(BUILD_TESTING)
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src/string_piece_util_test.cc
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src/subprocess_test.cc
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src/test.cc
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Michael Pratt