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PR gold/10708

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* copy-relocs.cc (Copy_relocs::emit_copy_reloc): Hold a lock on the
	object when reading from the file.
	* gold.cc (queue_middle_tasks): Hold a lock on the object when doing
	second layout pass.
	* icf.cc (preprocess_for_unique_sections): Hold a lock on the object
	when reading section contents.
	(get_section_contents): Likewise.
	(icf::find_identical_sections): Likewise.
	* mapfile.cc (Mapfile::print_discarded_sections): Hold a lock on the
	object when reading from the file.
	* plugin.cc (Plugin_manager::layout_deferred_objects): Hold a lock on
	the object when doing deferred section layout.
This commit is contained in:
Cary Coutant 2010-11-05 21:14:33 +00:00
parent 8baf536a5a
commit 5f9bcf5825
6 changed files with 64 additions and 3 deletions
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16
gold/ChangeLog
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@ -1,3 +1,19 @@
2010-11-05 Cary Coutant <ccoutant@google.com>
PR gold/10708
* copy-relocs.cc (Copy_relocs::emit_copy_reloc): Hold a lock on the
object when reading from the file.
* gold.cc (queue_middle_tasks): Hold a lock on the object when doing
second layout pass.
* icf.cc (preprocess_for_unique_sections): Hold a lock on the object
when reading section contents.
(get_section_contents): Likewise.
(icf::find_identical_sections): Likewise.
* mapfile.cc (Mapfile::print_discarded_sections): Hold a lock on the
object when reading from the file.
* plugin.cc (Plugin_manager::layout_deferred_objects): Hold a lock on
the object when doing deferred section layout.
2010-11-03 Nick Clifton <nickc@redhat.com>
PR gold/12001

13
gold/copy-relocs.cc
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@ -125,8 +125,17 @@ Copy_relocs<sh_type, size, big_endian>::emit_copy_reloc(
bool is_ordinary;
unsigned int shndx = sym->shndx(&is_ordinary);
gold_assert(is_ordinary);
typename elfcpp::Elf_types<size>::Elf_WXword addralign =
sym->object()->section_addralign(shndx);
typename elfcpp::Elf_types<size>::Elf_WXword addralign;
{
// Lock the object so we can read from it. This is only called
// single-threaded from scan_relocs, so it is OK to lock.
// Unfortunately we have no way to pass in a Task token.
const Task* dummy_task = reinterpret_cast<const Task*>(-1);
Object* obj = sym->object();
Task_lock_obj<Object> tl(dummy_task, obj);
addralign = obj->section_addralign(shndx);
}
typename Sized_symbol<size>::Value_type value = sym->value();
while ((value & (addralign - 1)) != 0)

1
gold/gold.cc
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@ -359,6 +359,7 @@ queue_middle_tasks(const General_options& options,
p != input_objects->relobj_end();
++p)
{
Task_lock_obj<Object> tlo(task, *p);
(*p)->layout(symtab, layout, NULL);
}
}

22
gold/icf.cc
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@ -182,6 +182,11 @@ preprocess_for_unique_sections(const std::vector<Section_id>& id_section,
section_size_type plen;
if (section_contents == NULL)
{
// Lock the object so we can read from it. This is only called
// single-threaded from queue_middle_tasks, so it is OK to lock.
// Unfortunately we have no way to pass in a Task token.
const Task* dummy_task = reinterpret_cast<const Task*>(-1);
Task_lock_obj<Object> tl(dummy_task, secn.first);
const unsigned char* contents;
contents = secn.first->section_contents(secn.second,
&plen,
@ -237,6 +242,11 @@ get_section_contents(bool first_iteration,
if (first_iteration)
{
// Lock the object so we can read from it. This is only called
// single-threaded from queue_middle_tasks, so it is OK to lock.
// Unfortunately we have no way to pass in a Task token.
const Task* dummy_task = reinterpret_cast<const Task*>(-1);
Task_lock_obj<Object> tl(dummy_task, secn.first);
contents = secn.first->section_contents(secn.second,
&plen,
false);
@ -363,6 +373,12 @@ get_section_contents(bool first_iteration,
if (!first_iteration)
continue;
// Lock the object so we can read from it. This is only called
// single-threaded from queue_middle_tasks, so it is OK to lock.
// Unfortunately we have no way to pass in a Task token.
const Task* dummy_task = reinterpret_cast<const Task*>(-1);
Task_lock_obj<Object> tl(dummy_task, it_v->first);
uint64_t secn_flags = (it_v->first)->section_flags(it_v->second);
// This reloc points to a merge section. Hash the
// contents of this section.
@ -682,6 +698,12 @@ Icf::find_identical_sections(const Input_objects* input_objects,
p != input_objects->relobj_end();
++p)
{
// Lock the object so we can read from it. This is only called
// single-threaded from queue_middle_tasks, so it is OK to lock.
// Unfortunately we have no way to pass in a Task token.
const Task* dummy_task = reinterpret_cast<const Task*>(-1);
Task_lock_obj<Object> tl(dummy_task, *p);
for (unsigned int i = 0;i < (*p)->shnum(); ++i)
{
const char* section_name = (*p)->section_name(i).c_str();

6
gold/mapfile.cc
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@ -347,6 +347,12 @@ Mapfile::print_discarded_sections(const Input_objects* input_objects)
++p)
{
Relobj* relobj = *p;
// Lock the object so we can read from it. This is only called
// single-threaded from Layout_task_runner, so it is OK to lock.
// Unfortunately we have no way to pass in a Task token.
const Task* dummy_task = reinterpret_cast<const Task*>(-1);
Task_lock_obj<Object> tl(dummy_task, relobj);
unsigned int shnum = relobj->shnum();
for (unsigned int i = 0; i < shnum; ++i)
{

9
gold/plugin.cc
View File

@ -361,7 +361,14 @@ Plugin_manager::layout_deferred_objects()
for (obj = this->deferred_layout_objects_.begin();
obj != this->deferred_layout_objects_.end();
++obj)
(*obj)->layout_deferred_sections(this->layout_);
{
// Lock the object so we can read from it. This is only called
// single-threaded from queue_middle_tasks, so it is OK to lock.
// Unfortunately we have no way to pass in a Task token.
const Task* dummy_task = reinterpret_cast<const Task*>(-1);
Task_lock_obj<Object> tl(dummy_task, *obj);
(*obj)->layout_deferred_sections(this->layout_);
}
}
// Call the cleanup handlers.