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binutils-gdb
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Add extra debugging output for files and descriptors. 

gold/
	* descriptors.cc (Descriptors::open): Set artificially-low limit for
	file descriptors when debugging enabled. Add debug output.
	(Descriptors::release): Add debug output.
	(Descriptors::close_some_descriptor): Likewise.
	(Descriptors::close_all): Likewise.
	* fileread.cc (File_read::lock): Likewise.
	(File_read::unlock): Likewise.
This commit is contained in:
Cary Coutant 2015-02-02 11:47:58 -08:00
parent b10c5c5012
commit 8265ef9502
2 changed files with 19 additions and 0 deletions
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17
gold/descriptors.cc
View File

@ -28,6 +28,7 @@
#include <fcntl.h>
#include <unistd.h>
#include "debug.h"
#include "parameters.h"
#include "options.h"
#include "gold-threads.h"
@ -81,6 +82,9 @@ Descriptors::open(int descriptor, const char* name, int flags, int mode)
gold_assert(lock_initialized || descriptor < 0);
if (is_debugging_enabled(DEBUG_FILES))
this->limit_ = 8;
if (descriptor >= 0)
{
Hold_lock hl(*this->lock_);
@ -99,6 +103,8 @@ Descriptors::open(int descriptor, const char* name, int flags, int mode)
pod->stack_next = -1;
pod->is_on_stack = false;
}
gold_debug(DEBUG_FILES, "Reused existing descriptor %d for \"%s\"",
descriptor, name);
return descriptor;
}
}
@ -128,6 +134,8 @@ Descriptors::open(int descriptor, const char* name, int flags, int mode)
errno = ENOENT;
}
gold_debug(DEBUG_FILES, "Opened new descriptor %d for \"%s\"",
new_descriptor, name);
return new_descriptor;
}
@ -162,6 +170,8 @@ Descriptors::open(int descriptor, const char* name, int flags, int mode)
if (this->current_ >= this->limit_)
this->close_some_descriptor();
gold_debug(DEBUG_FILES, "Opened new descriptor %d for \"%s\"",
new_descriptor, name);
return new_descriptor;
}
}
@ -209,6 +219,9 @@ Descriptors::release(int descriptor, bool permanent)
pod->is_on_stack = true;
}
}
gold_debug(DEBUG_FILES, "Released descriptor %d for \"%s\"",
descriptor, pod->name);
}
// Close some descriptor. The lock is held when this is called. We
@ -233,6 +246,8 @@ Descriptors::close_some_descriptor()
if (::close(i) < 0)
gold_warning(_("while closing %s: %s"), pod->name, strerror(errno));
--this->current_;
gold_debug(DEBUG_FILES, "Closed descriptor %d for \"%s\"",
i, pod->name);
pod->name = NULL;
if (last < 0)
this->stack_top_ = pod->stack_next;
@ -265,6 +280,8 @@ Descriptors::close_all()
{
if (::close(i) < 0)
gold_warning(_("while closing %s: %s"), pod->name, strerror(errno));
gold_debug(DEBUG_FILES, "Closed descriptor %d for \"%s\" (close_all)",
static_cast<int>(i), pod->name);
pod->name = NULL;
pod->stack_next = -1;
pod->is_on_stack = false;

2
gold/fileread.cc
View File

@ -293,6 +293,7 @@ void
File_read::lock(const Task* task)
{
gold_assert(this->released_);
gold_debug(DEBUG_FILES, "Locking file \"%s\"", this->name_.c_str());
this->token_.add_writer(task);
this->released_ = false;
}
@ -302,6 +303,7 @@ File_read::lock(const Task* task)
void
File_read::unlock(const Task* task)
{
gold_debug(DEBUG_FILES, "Unlocking file \"%s\"", this->name_.c_str());
this->release();
this->token_.remove_writer(task);
}