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xcb errors: optional dependency with improved messages

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Now message can look like:
[xwayland/xwm.c:991] xcb error: op ChangeProperty (no minor), code Window (no extension), value 6291465

instead of this one when the lib is not available:
[xwayland/xwm.c:999] xcb error: op 18:0, code 3, sequence 103, value 6291465

The value in case of Window is the window id, so we can tell what
function applied on which window which is a good start.
The sequence ought to be able to tell us more precisely which
invocation it was, but we never log it when calling functions
so is useless in practice and no longer logged.
This commit is contained in:
Dominique Martinet 2018-03-03 11:37:02 +01:00
parent 2a9ba5c8dc
commit f8428d1063
4 changed files with 57 additions and 7 deletions
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15
meson.build
View file

@ -64,6 +64,7 @@ xcb_xfixes = dependency('xcb-xfixes')
xcb_image = dependency('xcb-image')
xcb_render = dependency('xcb-render')
xcb_icccm = dependency('xcb-icccm', required: false)
xcb_errors = dependency('xcb-errors', required: get_option('enable_xcb_errors') == 'true')
x11_xcb = dependency('x11-xcb')
libcap = dependency('libcap', required: get_option('enable_libcap') == 'true')
systemd = dependency('libsystemd', required: get_option('enable_systemd') == 'true')
@ -78,6 +79,10 @@ if xcb_icccm.found()
conf_data.set('WLR_HAS_XCB_ICCCM', true)
endif
if xcb_errors.found() and get_option('enable_xcb_errors') != 'false'
conf_data.set('WLR_HAS_XCB_ERRORS', true)
endif
if libcap.found() and get_option('enable_libcap') != 'false'
conf_data.set('WLR_HAS_LIBCAP', true)
wlr_deps += libcap
@ -164,10 +169,12 @@ summary = [
'----------------',
'wlroots @0@'.format(meson.project_version()),
'',
' libcap: @0@'.format(conf_data.get('WLR_HAS_LIBCAP', false)),
' systemd: @0@'.format(conf_data.get('WLR_HAS_SYSTEMD', false)),
' elogind: @0@'.format(conf_data.get('WLR_HAS_ELOGIND', false)),
' xwayland: @0@'.format(conf_data.get('WLR_HAS_XWAYLAND', false)),
' libcap: @0@'.format(conf_data.get('WLR_HAS_LIBCAP', false)),
' systemd: @0@'.format(conf_data.get('WLR_HAS_SYSTEMD', false)),
' elogind: @0@'.format(conf_data.get('WLR_HAS_ELOGIND', false)),
' xwayland: @0@'.format(conf_data.get('WLR_HAS_XWAYLAND', false)),
' xcb-icccm: @0@'.format(conf_data.get('WLR_HAS_XCB_ICCCM', false)),
' xcb-errors: @0@'.format(conf_data.get('WLR_HAS_XCB_ERRORS', false)),
'----------------',
''
]

1
meson_options.txt
View file

@ -1,4 +1,5 @@
option('enable_libcap', type: 'combo', choices: ['auto', 'true', 'false'], value: 'auto', description: 'Enable support for capabilities')
option('enable_systemd', type: 'combo', choices: ['auto', 'true', 'false'], value: 'auto', description: 'Enable support for logind')
option('enable_elogind', type: 'combo', choices: ['auto', 'true', 'false'], value: 'auto', description: 'Enable support for logind')
option('enable_xcb_errors', type: 'combo', choices: ['auto', 'true', 'false'], value: 'auto', description: 'Use xcb-errors util library')
option('enable_xwayland', type: 'boolean', value: true, description: 'Enable support X11 applications')

1
xwayland/meson.build
View file

@ -15,6 +15,7 @@ lib_wlr_xwayland = static_library(
xcb_image,
xcb_render,
xcb_icccm,
xcb_errors,
xkbcommon,
pixman,
],

47
xwayland/xwm.c
View file

@ -19,6 +19,9 @@
#ifdef WLR_HAS_XCB_ICCCM
#include <xcb/xcb_icccm.h>
#endif
#ifdef WLR_HAS_XCB_ERRORS
#include <xcb/xcb_errors.h>
#endif
const char *atom_map[ATOM_LAST] = {
"WL_SURFACE_ID",
@ -955,9 +958,47 @@ static void xwm_handle_focus_in(struct wlr_xwm *xwm,
}
static void xwm_handle_xcb_error(struct wlr_xwm *xwm, xcb_value_error_t *ev) {
wlr_log(L_ERROR, "xcb error: code %d, sequence %d, value %d, opcode %d:%d",
ev->error_code, ev->sequence, ev->bad_value,
ev->minor_opcode, ev->major_opcode);
#ifdef WLR_HAS_XCB_ERRORS
xcb_errors_context_t *err_ctx;
if (xcb_errors_context_new(xwm->xcb_conn, &err_ctx)) {
wlr_log(L_DEBUG, "xcb error happened, but could not allocate error context");
goto log_raw;
}
const char *major_name;
major_name = xcb_errors_get_name_for_major_code(err_ctx, ev->major_opcode);
if (!major_name) {
wlr_log(L_DEBUG, "xcb error happened, but could not get major name");
xcb_errors_context_free(err_ctx);
goto log_raw;
}
const char *minor_name;
minor_name = xcb_errors_get_name_for_minor_code(err_ctx,
ev->major_opcode, ev->minor_opcode);
const char *error_name, *extension;
error_name = xcb_errors_get_name_for_error(err_ctx, ev->error_code, &extension);
if (!error_name) {
wlr_log(L_DEBUG, "xcb error happened, but could not get error name");
xcb_errors_context_free(err_ctx);
goto log_raw;
}
wlr_log(L_ERROR, "xcb error: op %s (%s), code %s (%s), value %"PRIu32,
major_name, minor_name ? minor_name : "no minor",
error_name, extension ? extension : "no extension",
ev->bad_value);
xcb_errors_context_free(err_ctx);
return;
log_raw:
#endif
wlr_log(L_ERROR,
"xcb error: op %"PRIu8":%"PRIu16", code %"PRIu8", sequence %"PRIu16", value %"PRIu32,
ev->major_opcode, ev->minor_opcode, ev->error_code,
ev->sequence, ev->bad_value);
}
/* This is in xcb/xcb_event.h, but pulling xcb-util just for a constant