//===--- EnvironmentVariables.def - Debug variables. ------------*- C++ -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2020 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// This file defines x-macros used for metaprogramming with the set of
// environment variables used for configuring or enabling debug features in the
// runtime.
//
//===----------------------------------------------------------------------===//

// #define VARIABLE(name, type, defaultValue, help)

#ifndef VARIABLE
#error "Must define VARIABLE to include EnvironmentVariables.def"
#endif

VARIABLE(SWIFT_DEBUG_ENABLE_METADATA_ALLOCATION_ITERATION, bool, false,
         "Enable additional metadata allocation tracking for swift-inspect to "
         "use.")

VARIABLE(SWIFT_DEBUG_ENABLE_METADATA_BACKTRACE_LOGGING, bool, false,
         "Enable logging of backtraces for each metadata allocation. Requires "
         "SWIFT_DEBUG_ENABLE_METADATA_ALLOCATION_ITERATION to be enabled.")

VARIABLE(SWIFT_DEBUG_IMPLICIT_OBJC_ENTRYPOINT, uint8_t, 2,
         "Print warnings when using implicit @objc entrypoints. Set to "
         "desired reporting level, 0-3.")

VARIABLE(SWIFT_DETERMINISTIC_HASHING, bool, false,
         "Disable randomized hash seeding.")

VARIABLE(SWIFT_ENABLE_MANGLED_NAME_VERIFICATION, bool, false,
         "Enable verification that metadata can roundtrip through a mangled "
         "name each time metadata is instantiated.")

VARIABLE(SWIFT_DEBUG_ENABLE_MALLOC_SCRIBBLE, bool, false,
         "Scribble on runtime allocations such as metadata allocations.")

VARIABLE(SWIFT_DEBUG_ENABLE_COW_CHECKS, bool, false,
         "Enable internal checks for copy-on-write operations.")

VARIABLE(SWIFT_DEBUG_VALIDATE_UNCHECKED_CONTINUATIONS, bool, false,
         "Check for and error on double-calls of unchecked continuations.")

#if defined(__APPLE__) && defined(__MACH__)

VARIABLE(SWIFT_DEBUG_VALIDATE_SHARED_CACHE_PROTOCOL_CONFORMANCES, bool, false,
         "Validate shared cache protocol conformance results against the "
         "lists of conformances in the shared cache images.")

VARIABLE(SWIFT_DEBUG_ENABLE_SHARED_CACHE_PROTOCOL_CONFORMANCES, bool, true,
         "Enable querying precomputed protocol conformances in the shared "
         "cache.")

#endif

VARIABLE(SWIFT_DEBUG_CONCURRENCY_ENABLE_COOPERATIVE_QUEUES, bool, true,
         "Enable dispatch cooperative queues in the global executor.")

#ifndef NDEBUG

VARIABLE(SWIFT_DEBUG_RUNTIME_EXCLUSIVITY_LOGGING, bool, false,
         "Enable the an asserts runtime to emit logging as it works.")

#endif

VARIABLE(SWIFT_BINARY_COMPATIBILITY_VERSION, uint32_t, 0,
        "Set the binary compatibility level of the Swift Standard Library")

VARIABLE(SWIFT_DEBUG_FAILED_TYPE_LOOKUP, bool, false,
         "Enable warnings when we fail to look up a type by name.")

VARIABLE(SWIFT_DEBUG_ENABLE_LIB_PRESPECIALIZED, bool, true,
         "Enable use of prespecializations library.")

VARIABLE(SWIFT_DEBUG_LIB_PRESPECIALIZED_PATH, string, "",
         "A path to a prespecializations library to use at runtime. In order "
         "to be used, this library must be loaded into the process by other "
         "means (such as DYLD_INSERT_LIBRARIES) before Swift tries to use it.")

VARIABLE(SWIFT_DEBUG_LIB_PRESPECIALIZED_DISABLED_PROCESSES, string, "",
         "A colon-separated list of process names where the prespecializations "
         "library will be forcibly disabled.")

VARIABLE(SWIFT_DEBUG_LIB_PRESPECIALIZED_ENABLED_PROCESSES, string, "",
         "A colon-separated list of process names where the prespecializations "
         "library will be forcibly enabled. This overrides the disabled "
         "processes list in the prespecializations library, as well as the "
         "list in SWIFT_DEBUG_LIB_PRESPECIALIZED_DISABLED_PROCESSES.")

VARIABLE(SWIFT_DEBUG_ENABLE_LIB_PRESPECIALIZED_LOGGING, bool, false,
         "Enable debug logging of prespecializations library use.")

VARIABLE(SWIFT_ROOT, string, "",
         "Overrides the root directory of the Swift installation. "
         "This is used to locate auxiliary files relative to the runtime "
         "itself.")

VARIABLE(SWIFT_BACKTRACE, string, "",
         "A comma-separated list of key=value pairs that controls the "
         "crash catching and backtracing support in the runtime. "
         "See docs/Backtracing.rst in the Swift repository for details.")

VARIABLE(SWIFT_IS_CURRENT_EXECUTOR_LEGACY_MODE_OVERRIDE, string, "",
         "Allows for suppressing 'is current executor' equality check crashes. "
         "As since Swift 6.0 checking for current executor equality, may crash "
         "and will never return 'false' because we are calling into library "
         "implemented SerialExecutor.checkIsolation which should crash if the "
         "isolation is not the expected one. Some old code may rely on the "
         "non-crashing behavior. This flag enables temporarily restoring the "
         "legacy 'nocrash' behavior until adopting code has been adjusted. "
         "Legal values are: "
         " 'legacy' (Legacy behavior), "
         " 'swift6' (Swift 6.0+ behavior)")

#undef VARIABLE
