logging.h

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/*
    This file is part of Ansel,
    Copyright (C) 2026 Aurélien PIERRE.
 
    Ansel is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    Ansel is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with Ansel.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DT_COMMON_LOGGING_H
#define DT_COMMON_LOGGING_H
 
/* Debug-channel flags and the dt_print() family. The implementations live in
 * darktable.c (they read the runtime `darktable.unmuted` mask), but the
 * DECLARATIONS need nothing from the application: low-level compute units include
 * this instead of darktable.h to be able to log. */
 
#include <stdint.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef enum dt_debug_thread_t
{
  DT_DEBUG_ALWAYS        = 0,       // always print regardless of debug flags
  // powers of two, masking
  DT_DEBUG_CACHE          = 1 <<  0,
  DT_DEBUG_CONTROL        = 1 <<  1,
  DT_DEBUG_DEV            = 1 <<  2,
  DT_DEBUG_GTK            = 1 <<  3,
  DT_DEBUG_PERF           = 1 <<  4,
  DT_DEBUG_PIPECACHE      = 1 <<  5,
  DT_DEBUG_OPENCL         = 1 <<  7,
  DT_DEBUG_SQL            = 1 <<  8,
  DT_DEBUG_MEMORY         = 1 <<  9,
  DT_DEBUG_LIGHTTABLE     = 1 << 10,
  DT_DEBUG_NAN            = 1 << 11,
  DT_DEBUG_MASKS          = 1 << 12,
  DT_DEBUG_LUA            = 1 << 13,
  DT_DEBUG_INPUT          = 1 << 14,
  DT_DEBUG_PRINT          = 1 << 15,
  DT_DEBUG_CAMERA_SUPPORT = 1 << 16,
  DT_DEBUG_IOPORDER       = 1 << 17,
  DT_DEBUG_IMAGEIO        = 1 << 18,
  DT_DEBUG_UNDO           = 1 << 19,
  DT_DEBUG_SIGNAL         = 1 << 20,
  DT_DEBUG_PARAMS         = 1 << 21,
  DT_DEBUG_DEMOSAIC       = 1 << 22,
  DT_DEBUG_SHORTCUTS      = 1 << 23,
  DT_DEBUG_TILING         = 1 << 24,
  DT_DEBUG_HISTORY        = 1 << 25,
  DT_DEBUG_PIPE           = 1 << 26,
  DT_DEBUG_IMPORT         = 1 << 27,
  DT_DEBUG_VERBOSE        = 1 << 28,
  DT_DEBUG_COLORPROFILE   = 1 << 29,
  DT_DEBUG_NOCACHE_REUSE  = 1 << 30,
} dt_debug_thread_t;
 
// Uses the top (sign) bit of the int32_t `unmuted` mask. Defined as a macro
// because 1 << 31 is not representable as an `int` enumerator. Enables the
// high-level event supervisor (NDJSON tracing of history/pipeline/cache state).
// See develop/supervisor.h.
#define DT_DEBUG_SUPERVISOR ((int32_t)(1u << 31))
 
/* Runtime debug-channel mask (the application's `darktable.unmuted`). Accessor
 * declared here, implemented by the orchestrator (darktable.c, next to
 * dt_print()) so header inlines can gate on debug channels without importing
 * the application struct. Test with `dt_get_debug_flags() & DT_DEBUG_XXX`. */
int32_t dt_get_debug_flags(void);
 
void dt_print(dt_debug_thread_t thread, const char *msg, ...) __attribute__((format(printf, 2, 3)));
 
void dt_print_nts(dt_debug_thread_t thread, const char *msg, ...) __attribute__((format(printf, 2, 3)));
 
void dt_vprint(dt_debug_thread_t thread, const char *msg, ...) __attribute__((format(printf, 2, 3)));
 
#ifdef __cplusplus
}
#endif
 
#endif // DT_COMMON_LOGGING_H
 
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