-#include <msp/path/utils.h>
-#include <msp/time/utils.h>
-#include "action.h"
+#include <msp/core/algorithm.h>
+#include <msp/fs/stat.h>
+#include <msp/fs/utils.h>
+#include <msp/strings/format.h>
#include "builder.h"
-#include "package.h"
+#include "filetarget.h"
+#include "sourcepackage.h"
#include "target.h"
+#include "task.h"
+#include "tool.h"
using namespace std;
using namespace Msp;
-/**
-Tries to locate a target that will help getting this target built. If all
-dependencies are up-to-date, returns this target. If there are no targets
-ready to be built (maybe because they are being built right now), returns 0.
-*/
-Target *Target::get_buildable_target()
+Target::Target(Builder &b, const string &n):
+ builder(b),
+ package(0),
+ component(0),
+ name(n),
+ tool(0),
+ state(INIT),
+ primary_target(0)
{
- bool self_ok=true;
- for(TargetList::iterator i=depends.begin(); i!=depends.end(); ++i)
- {
- Target *tgt=(*i)->get_buildable_target();
- if(tgt)
- return tgt;
- else if((*i)->get_rebuild())
- self_ok=false;
- }
+ builder.get_build_graph().add_target(this);
+}
- if(self_ok && rebuild && !building)
- return this;
+void Target::add_dependency(Target &dep)
+{
+ if(&dep==this)
+ throw invalid_argument("Target::add_depend");
+ depends.push_back(&dep);
+ if(state>PREPARING)
+ dep.signal_bubble_rebuild.connect(sigc::mem_fun(this, &Target::check_rebuild));
+}
- return 0;
+void Target::add_transitive_dependency(Target &dep)
+{
+ if(&dep==this)
+ throw invalid_argument("Target::add_transitive_dependency");
+ trans_depends.push_back(&dep);
}
-void Target::add_depend(Target *dep)
+void Target::add_side_effect(Target &se)
{
- depends.push_back(dep);
- dep->rdepends.push_back(this);
+ side_effects.push_back(&se);
+ if(tool)
+ se.set_tool(*tool);
+ se.primary_target = this;
+ /* Side effects are checked for rebuild after the primary target. Recheck
+ the primary if a side effect is marked for rebuild. */
+ se.signal_bubble_rebuild.connect(sigc::mem_fun(this, &Target::check_rebuild));
}
-/**
-Prepares the target by recursively preparing dependencies, then checking
-whether rebuilding is needed. A flag is used to prevent unnecessary
-executions.
-*/
-void Target::prepare()
+Target *Target::get_buildable_target()
{
- if(prepared)
- return;
+ if(primary_target)
+ return primary_target->get_buildable_target();
+ if(!needs_rebuild())
+ return 0;
- prepared=true;
- for(TargetList::iterator i=depends.begin(); i!=depends.end(); ++i)
- (*i)->prepare();
+ bool self_ok = state!=BUILDING;
+ for(Target *d: depends)
+ {
+ // Avoid infinite recursion if a target depends on its own side effect
+ if(any_equals(side_effects, d))
+ continue;
- check_rebuild();
+ Target *tgt = d->get_buildable_target();
+ if(tgt)
+ return tgt;
+ else if(d->needs_rebuild())
+ self_ok = false;
+ }
+ if(self_ok)
+ return this;
+
+ return 0;
}
-/**
-Returns the number of targets that need to be rebuilt in order to get this
-target up-to-date.
-*/
-unsigned Target::count_rebuild()
+void Target::set_tool(Tool &t)
{
- if(counted)
- return 0;
-
- counted=true;
- unsigned count=rebuild;
- for(TargetList::iterator i=depends.begin(); i!=depends.end(); ++i)
- count+=(*i)->count_rebuild();
- return count;
+ tool = &t;
+ for(Target *s: side_effects)
+ s->set_tool(t);
}
-/**
-Changes the mtime of the target to the current time.
-*/
-void Target::touch()
+void Target::collect_build_info(BuildInfo &binfo) const
{
- mtime=Time::now();
+ if(tool)
+ binfo.update_from(tool->get_build_info());
+ if(component)
+ binfo.update_from(component->get_build_info());
+ else if(package)
+ binfo.update_from(package->get_build_info());
}
-Target::Target(Builder &b, const Package *p, const string &n):
- builder(b),
- package(p),
- name(n),
- buildable(false),
- building(false),
- rebuild(false),
- deps_ready(false),
- prepared(false),
- counted(false)
+void Target::force_rebuild()
{
- struct stat st;
- if(!Path::stat(name, st))
- mtime=Time::TimeStamp::from_unixtime(st.st_mtime);
+ if(!is_buildable())
+ throw logic_error("Target::force_rebuild");
+ mark_rebuild("Forced rebuild");
}
-void Target::mark_rebuild(const std::string &reason)
+void Target::mark_rebuild(const string &reason)
{
- rebuild=true;
- rebuild_reason=reason;
+ if(reason.empty())
+ throw invalid_argument("No reason given for rebuilding "+name);
+
+ state = REBUILD;
+ rebuild_reason = reason;
+
+ builder.get_logger().log("rebuild", format("Rebuilding %s: %s", name, reason));
+
+ signal_bubble_rebuild.emit();
}
-/**
-Checks if this target needs to be rebuilt and why.
-*/
-void Target::check_rebuild()
+void Target::prepare()
{
- if(!buildable)
+ if(state>PREPARING)
+ return;
+ if(state==PREPARING)
+ {
+ builder.get_logger().log("problems", format("Dependency cycle detected at %s", name));
+ problems.push_back("Dependency cycle detected");
+ state = BROKEN;
return;
+ }
+
+ state = PREPARING;
+ if(tool)
+ tool->prepare();
- if(builder.get_build_all())
- mark_rebuild("Rebuilding everything");
- else if(!mtime)
- mark_rebuild("Does not exist");
- else
+ find_dependencies();
+ bool broken = !problems.empty();
+
+ if(tool)
+ {
+ if(FileTarget *tool_exe = tool->get_executable())
+ add_dependency(*tool_exe);
+ broken |= !tool->get_problems().empty();
+
+ // Only check package and component problems for buildable targets
+ // XXX How to propagate nested package problems?
+ broken |= (package && !package->get_problems().empty());
+ broken |= (component && !component->get_problems().empty());
+ }
+
+ for(Target *d: depends)
{
- for(TargetList::iterator i=depends.begin(); (i!=depends.end() && !rebuild); ++i)
- {
- if((*i)->get_mtime()>mtime)
- mark_rebuild(Path::basename((*i)->get_name())+" has changed");
- else if((*i)->get_rebuild())
- mark_rebuild(Path::basename((*i)->get_name())+" needs rebuilding");
- }
+ d->prepare();
+ broken |= d->is_broken();
}
- if(!rebuild && package && package->get_config().get_mtime()>mtime)
- mark_rebuild("Package options changed");
+ for(Target *d: trans_depends)
+ d->prepare();
+
+ check_rebuild();
+ if(broken)
+ state = BROKEN;
+ else if(state==PREPARING)
+ state = UPTODATE;
+
+ for(Target *d: depends)
+ d->signal_bubble_rebuild.connect(sigc::mem_fun(this, &Target::check_rebuild));
}
-/**
-Hooks the target up with the given action, then returns it. This should be
-called from the public build() function of buildable targets.
-*/
-Action *Target::build(Action *action)
+Task *Target::build()
{
- building=true;
- action->signal_done.connect(sigc::mem_fun(this, &Target::build_done));
- return action;
+ if(primary_target)
+ return primary_target->build();
+
+ Task *task = tool->run(*this);
+ task->signal_finished.connect(sigc::mem_fun(this, &Target::build_finished));
+ state = BUILDING;
+
+ build(*task);
+ for(Target *s: side_effects)
+ s->build(*task);
+
+ return task;
}
-/**
-Handles for the build_done signal of Action.
-*/
-void Target::build_done()
+void Target::build_finished(bool success)
{
- building=false;
- rebuild=false;
+ state = UPTODATE;
+ if(success)
+ {
+ modified();
+ for(Target *s: side_effects)
+ s->build_finished(success);
+ signal_modified.emit();
+ }
}