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-rw-r--r--waflib/extras/batched_cc.py173
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diff --git a/waflib/extras/batched_cc.py b/waflib/extras/batched_cc.py
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--- a/waflib/extras/batched_cc.py
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-#!/usr/bin/env python
-# encoding: utf-8
-# Thomas Nagy, 2006-2015 (ita)
-
-"""
-Instead of compiling object files one by one, c/c++ compilers are often able to compile at once:
-cc -c ../file1.c ../file2.c ../file3.c
-
-Files are output on the directory where the compiler is called, and dependencies are more difficult
-to track (do not run the command on all source files if only one file changes)
-As such, we do as if the files were compiled one by one, but no command is actually run:
-replace each cc/cpp Task by a TaskSlave. A new task called TaskMaster collects the
-signatures from each slave and finds out the command-line to run.
-
-Just import this module to start using it:
-def build(bld):
- bld.load('batched_cc')
-
-Note that this is provided as an example, unity builds are recommended
-for best performance results (fewer tasks and fewer jobs to execute).
-See waflib/extras/unity.py.
-"""
-
-from waflib import Task, Utils
-from waflib.TaskGen import extension, feature, after_method
-from waflib.Tools import c, cxx
-
-MAX_BATCH = 50
-
-c_str = '${CC} ${ARCH_ST:ARCH} ${CFLAGS} ${FRAMEWORKPATH_ST:FRAMEWORKPATH} ${tsk.batch_incpaths()} ${DEFINES_ST:DEFINES} -c ${SRCLST} ${CXX_TGT_F_BATCHED} ${CPPFLAGS}'
-c_fun, _ = Task.compile_fun_noshell(c_str)
-
-cxx_str = '${CXX} ${ARCH_ST:ARCH} ${CXXFLAGS} ${FRAMEWORKPATH_ST:FRAMEWORKPATH} ${tsk.batch_incpaths()} ${DEFINES_ST:DEFINES} -c ${SRCLST} ${CXX_TGT_F_BATCHED} ${CPPFLAGS}'
-cxx_fun, _ = Task.compile_fun_noshell(cxx_str)
-
-count = 70000
-class batch(Task.Task):
- color = 'PINK'
-
- after = ['c', 'cxx']
- before = ['cprogram', 'cshlib', 'cstlib', 'cxxprogram', 'cxxshlib', 'cxxstlib']
-
- def uid(self):
- return Utils.h_list([Task.Task.uid(self), self.generator.idx, self.generator.path.abspath(), self.generator.target])
-
- def __str__(self):
- return 'Batch compilation for %d slaves' % len(self.slaves)
-
- def __init__(self, *k, **kw):
- Task.Task.__init__(self, *k, **kw)
- self.slaves = []
- self.inputs = []
- self.hasrun = 0
-
- global count
- count += 1
- self.idx = count
-
- def add_slave(self, slave):
- self.slaves.append(slave)
- self.set_run_after(slave)
-
- def runnable_status(self):
- for t in self.run_after:
- if not t.hasrun:
- return Task.ASK_LATER
-
- for t in self.slaves:
- #if t.executed:
- if t.hasrun != Task.SKIPPED:
- return Task.RUN_ME
-
- return Task.SKIP_ME
-
- def get_cwd(self):
- return self.slaves[0].outputs[0].parent
-
- def batch_incpaths(self):
- st = self.env.CPPPATH_ST
- return [st % node.abspath() for node in self.generator.includes_nodes]
-
- def run(self):
- self.outputs = []
-
- srclst = []
- slaves = []
- for t in self.slaves:
- if t.hasrun != Task.SKIPPED:
- slaves.append(t)
- srclst.append(t.inputs[0].abspath())
-
- self.env.SRCLST = srclst
-
- if self.slaves[0].__class__.__name__ == 'c':
- ret = c_fun(self)
- else:
- ret = cxx_fun(self)
-
- if ret:
- return ret
-
- for t in slaves:
- t.old_post_run()
-
-def hook(cls_type):
- def n_hook(self, node):
-
- ext = '.obj' if self.env.CC_NAME == 'msvc' else '.o'
- name = node.name
- k = name.rfind('.')
- if k >= 0:
- basename = name[:k] + ext
- else:
- basename = name + ext
-
- outdir = node.parent.get_bld().make_node('%d' % self.idx)
- outdir.mkdir()
- out = outdir.find_or_declare(basename)
-
- task = self.create_task(cls_type, node, out)
-
- try:
- self.compiled_tasks.append(task)
- except AttributeError:
- self.compiled_tasks = [task]
-
- if not getattr(self, 'masters', None):
- self.masters = {}
- self.allmasters = []
-
- def fix_path(tsk):
- if self.env.CC_NAME == 'msvc':
- tsk.env.append_unique('CXX_TGT_F_BATCHED', '/Fo%s\\' % outdir.abspath())
-
- if not node.parent in self.masters:
- m = self.masters[node.parent] = self.master = self.create_task('batch')
- fix_path(m)
- self.allmasters.append(m)
- else:
- m = self.masters[node.parent]
- if len(m.slaves) > MAX_BATCH:
- m = self.masters[node.parent] = self.master = self.create_task('batch')
- fix_path(m)
- self.allmasters.append(m)
- m.add_slave(task)
- return task
- return n_hook
-
-extension('.c')(hook('c'))
-extension('.cpp','.cc','.cxx','.C','.c++')(hook('cxx'))
-
-@feature('cprogram', 'cshlib', 'cstaticlib', 'cxxprogram', 'cxxshlib', 'cxxstlib')
-@after_method('apply_link')
-def link_after_masters(self):
- if getattr(self, 'allmasters', None):
- for m in self.allmasters:
- self.link_task.set_run_after(m)
-
-# Modify the c and cxx task classes - in theory it would be best to
-# create subclasses and to re-map the c/c++ extensions
-for x in ('c', 'cxx'):
- t = Task.classes[x]
- def run(self):
- pass
-
- def post_run(self):
- pass
-
- setattr(t, 'oldrun', getattr(t, 'run', None))
- setattr(t, 'run', run)
- setattr(t, 'old_post_run', t.post_run)
- setattr(t, 'post_run', post_run)
-