diff options
Diffstat (limited to 'absl/flags/internal/commandlineflag.cc')
-rw-r--r-- | absl/flags/internal/commandlineflag.cc | 93 |
1 files changed, 1 insertions, 92 deletions
diff --git a/absl/flags/internal/commandlineflag.cc b/absl/flags/internal/commandlineflag.cc index 98a46695..2063cda6 100644 --- a/absl/flags/internal/commandlineflag.cc +++ b/absl/flags/internal/commandlineflag.cc @@ -68,7 +68,7 @@ absl::Mutex* InitFlag(CommandLineFlag* flag) { { absl::MutexLock lock(mu); - if (!flag->retired && flag->def == nullptr) { + if (!flag->IsRetired() && flag->def == nullptr) { // Need to initialize def and cur fields. flag->def = (*flag->make_init_value)(); flag->cur = Clone(flag->op, flag->def); @@ -94,16 +94,6 @@ absl::Mutex* CommandLineFlag::InitFlagIfNecessary() const return &this->locks->primary_mu; } -void CommandLineFlag::Destroy() const { - // Values are heap allocated for retired and Abseil Flags. - if (IsRetired() || IsAbseilFlag()) { - if (this->cur) Delete(this->op, this->cur); - if (this->def) Delete(this->op, this->def); - } - - delete this->locks; -} - bool CommandLineFlag::IsModified() const { absl::MutexLock l(InitFlagIfNecessary()); return modified; @@ -159,87 +149,6 @@ std::string CommandLineFlag::CurrentValue() const { return Unparse(this->marshalling_op, this->cur); } -bool CommandLineFlag::HasValidatorFn() const { - absl::MutexLock l(InitFlagIfNecessary()); - - return this->validator != nullptr; -} - -bool CommandLineFlag::SetValidatorFn(FlagValidator fn) { - absl::MutexLock l(InitFlagIfNecessary()); - - // ok to register the same function over and over again - if (fn == this->validator) return true; - - // Can't set validator to a different function, unless reset first. - if (fn != nullptr && this->validator != nullptr) { - ABSL_INTERNAL_LOG( - WARNING, absl::StrCat("Ignoring SetValidatorFn() for flag '", Name(), - "': validate-fn already registered")); - - return false; - } - - this->validator = fn; - return true; -} - -bool CommandLineFlag::InvokeValidator(const void* value) const - EXCLUSIVE_LOCKS_REQUIRED(this->locks->primary_mu) { - if (!this->validator) { - return true; - } - - (void)value; - - ABSL_INTERNAL_LOG( - FATAL, - absl::StrCat("Flag '", Name(), - "' of encapsulated type should not have a validator")); - - return false; -} - -void CommandLineFlag::SetCallback( - const flags_internal::FlagCallback mutation_callback) { - absl::MutexLock l(InitFlagIfNecessary()); - - callback = mutation_callback; - - InvokeCallback(); -} - -// If the flag has a mutation callback this function invokes it. While the -// callback is being invoked the primary flag's mutex is unlocked and it is -// re-locked back after call to callback is completed. Callback invocation is -// guarded by flag's secondary mutex instead which prevents concurrent callback -// invocation. Note that it is possible for other thread to grab the primary -// lock and update flag's value at any time during the callback invocation. -// This is by design. Callback can get a value of the flag if necessary, but it -// might be different from the value initiated the callback and it also can be -// different by the time the callback invocation is completed. -// Requires that *primary_lock be held in exclusive mode; it may be released -// and reacquired by the implementation. -void CommandLineFlag::InvokeCallback() - EXCLUSIVE_LOCKS_REQUIRED(this->locks->primary_mu) { - if (!this->callback) return; - - // The callback lock is guaranteed initialized, because *locks->primary_mu - // exists. - absl::Mutex* callback_mu = &this->locks->callback_mu; - - // When executing the callback we need the primary flag's mutex to be unlocked - // so that callback can retrieve the flag's value. - this->locks->primary_mu.Unlock(); - - { - absl::MutexLock lock(callback_mu); - this->callback(); - } - - this->locks->primary_mu.Lock(); -} - // Attempts to parse supplied `value` string using parsing routine in the `flag` // argument. If parsing is successful, it will try to validate that the parsed // value is valid for the specified 'flag'. Finally this function stores the |