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Remove struct complain

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At this point, struct complain is just holds a key, a value, and a
"next" pointer to form a linked list.  It's simpler to replace this
with an unordered map.

gdb/ChangeLog
2018-05-23  Tom Tromey  <tom@tromey.com>

	* complaints.c (counters): New global.
	(struct complain): Remove.
	(struct complaints) <root>: Remove.
	(complaint_sentinel): Remove.
	(symfile_complaint_book): Update.
	(find_complaint) Remove.
	(complaint_internal, clear_complaints): Update.

gdb/testsuite/ChangeLog
2018-05-23  Tom Tromey  <tom@tromey.com>

	* gdb.gdb/complaints.exp (test_initial_complaints): Simplify.
This commit is contained in:
Tom Tromey 2018-05-16 23:22:54 -06:00
parent 7ff8817441
commit ff1cf532db
4 changed files with 23 additions and 69 deletions
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10
gdb/ChangeLog
View File

@ -1,3 +1,13 @@
2018-05-23 Tom Tromey <tom@tromey.com>
* complaints.c (counters): New global.
(struct complain): Remove.
(struct complaints) <root>: Remove.
(complaint_sentinel): Remove.
(symfile_complaint_book): Update.
(find_complaint) Remove.
(complaint_internal, clear_complaints): Update.
2018-05-23 Tom Tromey <tom@tromey.com>
* complaints.c (struct complain) <file, line>: Remove.

62
gdb/complaints.c
View File

@ -21,6 +21,7 @@
#include "complaints.h"
#include "command.h"
#include "gdbcmd.h"
#include <unordered_map>
/* Should each complaint message be self explanatory, or should we
assume that a series of complaints is being produced? */
@ -34,59 +35,19 @@ enum complaint_series {
SHORT_FIRST_MESSAGE,
};
/* Structure to manage complaints about symbol file contents. */
/* Map format strings to counters. */
struct complain
{
const char *fmt;
int counter;
struct complain *next;
};
static std::unordered_map<const char *, int> counters;
struct complaints
{
struct complain *root;
enum complaint_series series;
};
static struct complain complaint_sentinel;
static struct complaints symfile_complaint_book = {
&complaint_sentinel,
ISOLATED_MESSAGE
};
static struct complain * ATTRIBUTE_PRINTF (2, 0)
find_complaint (struct complaints *complaints, const char *fmt)
{
struct complain *complaint;
/* Find the complaint in the table. A more efficient search
algorithm (based on hash table or something) could be used. But
that can wait until someone shows evidence that this lookup is
a real bottle neck. */
for (complaint = complaints->root;
complaint != NULL;
complaint = complaint->next)
{
if (complaint->fmt == fmt)
return complaint;
}
/* Oops not seen before, fill in a new complaint. */
complaint = XNEW (struct complain);
complaint->fmt = fmt;
complaint->counter = 0;
complaint->next = NULL;
/* File it, return it. */
complaint->next = complaints->root;
complaints->root = complaint;
return complaint;
}
/* How many complaints about a particular thing should be printed
before we stop whining about it? Default is no whining at all,
since so many systems have ill-constructed symbol files. */
@ -99,24 +60,14 @@ void
complaint_internal (const char *fmt, ...)
{
va_list args;
struct complain *complaint = find_complaint (&symfile_complaint_book, fmt);
enum complaint_series series;
complaint->counter++;
if (complaint->counter > stop_whining)
if (counters[fmt]++ > stop_whining)
return;
va_start (args, fmt);
series = symfile_complaint_book.series;
/* Pass 'fmt' instead of 'complaint->fmt' to printf-like callees
from here on, to avoid "format string is not a string literal"
warnings. 'fmt' is this function's printf-format parameter, so
the compiler can assume the passed in argument is a literal
string somewhere up the call chain. */
gdb_assert (complaint->fmt == fmt);
if (deprecated_warning_hook)
(*deprecated_warning_hook) (fmt, args);
else
@ -150,10 +101,7 @@ clear_complaints (int less_verbose)
{
struct complain *p;
for (p = symfile_complaint_book.root; p != NULL; p = p->next)
{
p->counter = 0;
}
counters.clear ();
if (!less_verbose)
symfile_complaint_book.series = ISOLATED_MESSAGE;

4
gdb/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2018-05-23 Tom Tromey <tom@tromey.com>
* gdb.gdb/complaints.exp (test_initial_complaints): Simplify.
2018-05-23 Tom Tromey <tom@tromey.com>
* gdb.gdb/complaints.exp (test_initial_complaints): Don't mention

16
gdb/testsuite/gdb.gdb/complaints.exp
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@ -57,26 +57,18 @@ proc test_initial_complaints { } {
# Unsupress complaints
gdb_test "set stop_whining = 2"
gdb_test_no_output "set var \$cstr = \"Register a complaint\""
# Prime the system
gdb_test_stdio \
"call complaint_internal (\"Register a complaint\")" \
"call complaint_internal (\$cstr)" \
"During symbol reading, Register a complaint."
# Check that the complaint was inserted and where
gdb_test "print symfile_complaint_book.root->fmt" \
".\[0-9\]+ =.*\"Register a complaint\""
# Re-issue the first message #1
gdb_test_stdio \
"call complaint_internal (symfile_complaint_book.root->fmt)" \
"call complaint_internal (\$cstr)" \
"During symbol reading, Register a complaint."
# Check that there is only one thing in the list. How the boolean
# result is output depends on whether GDB is built as a C or C++
# program.
gdb_test "print symfile_complaint_book.root->next == &complaint_sentinel" \
".\[0-9\]+ = \(1|true\)" "list has one entry"
# Add a second complaint, expect it
gdb_test_stdio \
"call complaint_internal (\"Testing! Testing! Testing!\")" \