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Make probe_ops::get_probes fill an std::vector 

This patch changes one usage of VEC to std::vector.  It is a relatively
straightforward 1:1 change.  The implementations of
sym_probe_fns::sym_get_probes return a borrowed reference to their probe
vectors, meaning that the caller should not free it.  In the new code, I
made them return a const reference to the vector.

This patch and the following one were tested by the buildbot.  I didn't
see any failures that looked related to this one.

gdb/ChangeLog:

	* probe.h (struct probe_ops) <get_probes>: Change parameter from
	vec to std::vector.
	* probe.c (parse_probes_in_pspace): Update.
	(find_probes_in_objfile): Update.
	(find_probe_by_pc): Update.
	(collect_probes): Update.
	(probe_any_get_probes): Update.
	* symfile.h (struct sym_probe_fns) <sym_get_probes> Change
	return type to reference to std::vector.
	* dtrace-probe.c (dtrace_process_dof_probe): Change parameter to
	std::vector and update.
	(dtrace_process_dof): Likewise.
	(dtrace_get_probes): Likewise.
	* elfread.c (elf_get_probes): Change return type to std::vector,
	store an std::vector in bfd_data.
	(probe_key_free): Update to std::vector.
	* stap-probe.c (handle_stap_probe): Change parameter to
	std::vector and update.
	(stap_get_probes): Likewise.
	* symfile-debug.c (debug_sym_get_probes): Change return type to
	std::vector and update.
This commit is contained in:
Simon Marchi 2017-09-12 13:37:00 +02:00
parent 331f81b22c
commit aaa63a3190
8 changed files with 65 additions and 60 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
gdb/ChangeLog
View File

@ -1,3 +1,27 @@
2017-09-12 Simon Marchi <simon.marchi@ericsson.com>
* probe.h (struct probe_ops) <get_probes>: Change parameter from
vec to std::vector.
* probe.c (parse_probes_in_pspace): Update.
(find_probes_in_objfile): Update.
(find_probe_by_pc): Update.
(collect_probes): Update.
(probe_any_get_probes): Update.
* symfile.h (struct sym_probe_fns) <sym_get_probes> Change
return type to reference to std::vector.
* dtrace-probe.c (dtrace_process_dof_probe): Change parameter to
std::vector and update.
(dtrace_process_dof): Likewise.
(dtrace_get_probes): Likewise.
* elfread.c (elf_get_probes): Change return type to std::vector,
store an std::vector in bfd_data.
(probe_key_free): Update to std::vector.
* stap-probe.c (handle_stap_probe): Change parameter to
std::vector and update.
(stap_get_probes): Likewise.
* symfile-debug.c (debug_sym_get_probes): Change return type to
std::vector and update.
2017-09-11 Tom Tromey <tom@tromey.com>
* breakpoint.c (program_breakpoint_here_p): Update.

9
gdb/dtrace-probe.c
View File

@ -313,7 +313,8 @@ struct dtrace_dof_probe
static void
dtrace_process_dof_probe (struct objfile *objfile,
struct gdbarch *gdbarch, VEC (probe_p) **probesp,
struct gdbarch *gdbarch,
std::vector<probe *> *probesp,
struct dtrace_dof_hdr *dof,
struct dtrace_dof_probe *probe,
struct dtrace_dof_provider *provider,
@ -448,7 +449,7 @@ dtrace_process_dof_probe (struct objfile *objfile,
ret->enablers = VEC_copy (dtrace_probe_enabler_s, enablers);
/* Successfully created probe. */
VEC_safe_push (probe_p, *probesp, (struct probe *) ret);
probesp->push_back ((struct probe *) ret);
}
do_cleanups (cleanup);
@ -461,7 +462,7 @@ dtrace_process_dof_probe (struct objfile *objfile,
static void
dtrace_process_dof (asection *sect, struct objfile *objfile,
VEC (probe_p) **probesp, struct dtrace_dof_hdr *dof)
std::vector<probe *> *probesp, struct dtrace_dof_hdr *dof)
{
struct gdbarch *gdbarch = get_objfile_arch (objfile);
struct dtrace_dof_sect *section;
@ -620,7 +621,7 @@ dtrace_get_arg (struct dtrace_probe *probe, unsigned n,
/* Implementation of the get_probes method. */
static void
dtrace_get_probes (VEC (probe_p) **probesp, struct objfile *objfile)
dtrace_get_probes (std::vector<probe *> *probesp, struct objfile *objfile)
{
bfd *abfd = objfile->obfd;
asection *sect = NULL;

27
gdb/elfread.c
View File

@ -1309,35 +1309,30 @@ elf_symfile_init (struct objfile *objfile)
/* Implementation of `sym_get_probes', as documented in symfile.h. */
static VEC (probe_p) *
static const std::vector<probe *> &
elf_get_probes (struct objfile *objfile)
{
VEC (probe_p) *probes_per_bfd;
std::vector<probe *> *probes_per_bfd;
/* Have we parsed this objfile's probes already? */
probes_per_bfd = (VEC (probe_p) *) bfd_data (objfile->obfd, probe_key);
probes_per_bfd = (std::vector<probe *> *) bfd_data (objfile->obfd, probe_key);
if (!probes_per_bfd)
if (probes_per_bfd == NULL)
{
int ix;
const struct probe_ops *probe_ops;
probes_per_bfd = new std::vector<probe *>;
/* Here we try to gather information about all types of probes from the
objfile. */
for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, probe_ops);
ix++)
probe_ops->get_probes (&probes_per_bfd, objfile);
if (probes_per_bfd == NULL)
{
VEC_reserve (probe_p, probes_per_bfd, 1);
gdb_assert (probes_per_bfd != NULL);
}
probe_ops->get_probes (probes_per_bfd, objfile);
set_bfd_data (objfile->obfd, probe_key, probes_per_bfd);
}
return probes_per_bfd;
return *probes_per_bfd;
}
/* Helper function used to free the space allocated for storing SystemTap
@ -1346,14 +1341,12 @@ elf_get_probes (struct objfile *objfile)
static void
probe_key_free (bfd *abfd, void *d)
{
int ix;
VEC (probe_p) *probes = (VEC (probe_p) *) d;
struct probe *probe;
std::vector<probe *> *probes = (std::vector<probe *> *) d;
for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++)
for (struct probe *probe : *probes)
probe->pops->destroy (probe);
VEC_free (probe_p, probes);
delete probes;
}

38
gdb/probe.c
View File

@ -58,10 +58,6 @@ parse_probes_in_pspace (const struct probe_ops *probe_ops,
ALL_PSPACE_OBJFILES (search_pspace, objfile)
{
VEC (probe_p) *probes;
struct probe *probe;
int ix;
if (!objfile->sf || !objfile->sf->sym_probe_fns)
continue;
@ -71,9 +67,10 @@ parse_probes_in_pspace (const struct probe_ops *probe_ops,
objfile_namestr) != 0)
continue;
probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile);
const std::vector<probe *> &probes
= objfile->sf->sym_probe_fns->sym_get_probes (objfile);
for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++)
for (struct probe *probe : probes)
{
if (probe_ops != &probe_ops_any && probe->pops != probe_ops)
continue;
@ -211,15 +208,14 @@ VEC (probe_p) *
find_probes_in_objfile (struct objfile *objfile, const char *provider,
const char *name)
{
VEC (probe_p) *probes, *result = NULL;
int ix;
struct probe *probe;
VEC (probe_p) *result = NULL;
if (!objfile->sf || !objfile->sf->sym_probe_fns)
return NULL;
probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile);
for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++)
const std::vector<probe *> &probes
= objfile->sf->sym_probe_fns->sym_get_probes (objfile);
for (struct probe *probe : probes)
{
if (strcmp (probe->provider, provider) != 0)
continue;
@ -246,17 +242,14 @@ find_probe_by_pc (CORE_ADDR pc)
ALL_OBJFILES (objfile)
{
VEC (probe_p) *probes;
int ix;
struct probe *probe;
if (!objfile->sf || !objfile->sf->sym_probe_fns
|| objfile->sect_index_text == -1)
continue;
/* If this proves too inefficient, we can replace with a hash. */
probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile);
for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++)
const std::vector<probe *> &probes
= objfile->sf->sym_probe_fns->sym_get_probes (objfile);
for (struct probe *probe : probes)
if (get_probe_address (probe, objfile) == pc)
{
result.objfile = objfile;
@ -297,10 +290,6 @@ collect_probes (const std::string &objname, const std::string &provider,
ALL_OBJFILES (objfile)
{
VEC (probe_p) *probes;
struct probe *probe;
int ix;
if (! objfile->sf || ! objfile->sf->sym_probe_fns)
continue;
@ -310,9 +299,10 @@ collect_probes (const std::string &objname, const std::string &provider,
continue;
}
probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile);
const std::vector<probe *> &probes
= objfile->sf->sym_probe_fns->sym_get_probes (objfile);
for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++)
for (struct probe *probe : probes)
{
struct bound_probe bound;
@ -901,7 +891,7 @@ probe_any_is_linespec (const char **linespecp)
/* Dummy method used for `probe_ops_any'. */
static void
probe_any_get_probes (VEC (probe_p) **probesp, struct objfile *objfile)
probe_any_get_probes (std::vector<probe *> *probesp, struct objfile *objfile)
{
/* No probes can be provided by this dummy backend. */
}

2
gdb/probe.h
View File

@ -64,7 +64,7 @@ struct probe_ops
/* Function that should fill PROBES with known probes from OBJFILE. */
void (*get_probes) (VEC (probe_p) **probes, struct objfile *objfile);
void (*get_probes) (std::vector<probe *> *probes, struct objfile *objfile);
/* Compute the probe's relocated address. OBJFILE is the objfile
in which the probe originated. */

10
gdb/stap-probe.c
View File

@ -1472,7 +1472,7 @@ stap_clear_semaphore (struct probe *probe_generic, struct objfile *objfile,
static void
handle_stap_probe (struct objfile *objfile, struct sdt_note *el,
VEC (probe_p) **probesp, CORE_ADDR base)
std::vector<probe *> *probesp, CORE_ADDR base)
{
bfd *abfd = objfile->obfd;
int size = bfd_get_arch_size (abfd) / 8;
@ -1543,7 +1543,7 @@ handle_stap_probe (struct objfile *objfile, struct sdt_note *el,
ret->args_u.text = probe_args;
/* Successfully created probe. */
VEC_safe_push (probe_p, *probesp, (struct probe *) ret);
probesp->push_back ((struct probe *) ret);
}
/* Helper function which tries to find the base address of the SystemTap
@ -1588,7 +1588,7 @@ get_stap_base_address (bfd *obfd, bfd_vma *base)
SystemTap probes from OBJFILE. */
static void
stap_get_probes (VEC (probe_p) **probesp, struct objfile *objfile)
stap_get_probes (std::vector<probe *> *probesp, struct objfile *objfile)
{
/* If we are here, then this is the first time we are parsing the
SystemTap probe's information. We basically have to count how many
@ -1597,7 +1597,7 @@ stap_get_probes (VEC (probe_p) **probesp, struct objfile *objfile)
bfd *obfd = objfile->obfd;
bfd_vma base;
struct sdt_note *iter;
unsigned save_probesp_len = VEC_length (probe_p, *probesp);
unsigned save_probesp_len = probesp->size ();
if (objfile->separate_debug_objfile_backlink != NULL)
{
@ -1628,7 +1628,7 @@ stap_get_probes (VEC (probe_p) **probesp, struct objfile *objfile)
handle_stap_probe (objfile, iter, probesp, base);
}
if (save_probesp_len == VEC_length (probe_p, *probesp))
if (save_probesp_len == probesp->size ())
{
/* If we are here, it means we have failed to parse every known
probe. */

8
gdb/symfile-debug.c
View File

@ -384,20 +384,20 @@ static const struct quick_symbol_functions debug_sym_quick_functions =
/* Debugging version of struct sym_probe_fns. */
static VEC (probe_p) *
static const std::vector<probe *> &
debug_sym_get_probes (struct objfile *objfile)
{
const struct debug_sym_fns_data *debug_data
= ((const struct debug_sym_fns_data *)
objfile_data (objfile, symfile_debug_objfile_data_key));
VEC (probe_p) *retval;
retval = debug_data->real_sf->sym_probe_fns->sym_get_probes (objfile);
const std::vector<probe *> &retval
= debug_data->real_sf->sym_probe_fns->sym_get_probes (objfile);
fprintf_filtered (gdb_stdlog,
"probes->sym_get_probes (%s) = %s\n",
objfile_debug_name (objfile),
host_address_to_string (retval));
host_address_to_string (retval.data ()));
return retval;
}

7
gdb/symfile.h
View File

@ -314,11 +314,8 @@ struct quick_symbol_functions
struct sym_probe_fns
{
/* If non-NULL, return an array of probe objects.
The returned value does not have to be freed and it has lifetime of the
OBJFILE. */
VEC (probe_p) *(*sym_get_probes) (struct objfile *);
/* If non-NULL, return a reference to vector of probe objects. */
const std::vector<probe *> &(*sym_get_probes) (struct objfile *);
};
/* Structure to keep track of symbol reading functions for various