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BUG: Fix cmComputeLinkInformation cycle detection.

This commit is contained in:
Brad King 2008-01-23 15:56:17 -05:00
parent f27379e3f7
commit 48fddd602d
2 changed files with 15 additions and 12 deletions
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22
Source/cmComputeLinkInformation.cxx
View File

@ -1025,7 +1025,7 @@ void cmComputeLinkInformation::CollectRuntimeDirectories()
}
// Add link directories specified for the target.
std::vector<std::string> const& dirs = this->GetDirectories();
std::vector<std::string> const& dirs = this->Target->GetLinkDirectories();
for(std::vector<std::string>::const_iterator di = dirs.begin();
di != dirs.end(); ++di)
{
@ -1168,39 +1168,41 @@ void cmComputeLinkInformation::OrderRuntimeSearchPath()
{
// Allow a cycle to be diagnosed once.
this->CycleDiagnosed = false;
this->WalkId = 0;
// Iterate through the directories in the original order.
for(unsigned int i=0; i < this->RuntimeDirectories.size(); ++i)
{
this->VisitRuntimeDirectory(i, true);
// Start a new DFS from this node.
++this->WalkId;
this->VisitRuntimeDirectory(i);
}
}
//----------------------------------------------------------------------------
void cmComputeLinkInformation::VisitRuntimeDirectory(unsigned int i,
bool top)
void cmComputeLinkInformation::VisitRuntimeDirectory(unsigned int i)
{
// Skip nodes already visited.
if(this->RuntimeDirectoryVisited[i])
{
if(!top)
if(this->RuntimeDirectoryVisited[i] == this->WalkId)
{
// We have reached a previously visited node but were not called
// to start a new section of the graph. There is a cycle.
// We have reached a node previously visited on this DFS.
// There is a cycle.
this->DiagnoseCycle();
}
return;
}
// We are not visiting this node so mark it.
this->RuntimeDirectoryVisited[i] = 1;
// We are now visiting this node so mark it.
this->RuntimeDirectoryVisited[i] = this->WalkId;
// Visit the neighbors of the node first.
RuntimeConflictList const& clist = this->RuntimeConflictGraph[i];
for(RuntimeConflictList::const_iterator j = clist.begin();
j != clist.end(); ++j)
{
this->VisitRuntimeDirectory(j->first, false);
this->VisitRuntimeDirectory(j->first);
}
// Now that all directories required to come before this one have

5
Source/cmComputeLinkInformation.h
View File

@ -146,7 +146,7 @@ private:
std::set<cmStdString> LibraryRuntimeInfoEmmitted;
std::vector<std::string> RuntimeDirectories;
std::map<cmStdString, int> RuntimeDirectoryIndex;
std::vector<char> RuntimeDirectoryVisited;
std::vector<int> RuntimeDirectoryVisited;
void AddLibraryRuntimeInfo(std::string const& fullPath, cmTarget* target);
void AddLibraryRuntimeInfo(std::string const& fullPath,
const char* soname = 0);
@ -155,9 +155,10 @@ private:
void FindConflictingLibraries();
void FindDirectoriesForLib(unsigned int lri);
void OrderRuntimeSearchPath();
void VisitRuntimeDirectory(unsigned int i, bool top);
void VisitRuntimeDirectory(unsigned int i);
void DiagnoseCycle();
bool CycleDiagnosed;
int WalkId;
// Adjacency-list representation of runtime path ordering graph.
// This maps from directory to those that must come *before* it.