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Ensures lifetime-linked track flushing without relying on virtual calls within a destructor.

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This commit is contained in:
Thomas Harte 2017-10-07 19:14:18 -04:00
parent 53b99ea248
commit b37787a414
3 changed files with 7 additions and 3 deletions
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4
Storage/Disk/Disk.hpp
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@ -23,9 +23,7 @@ namespace Disk {
class Disk { class Disk {
public: public:
virtual ~Disk() { virtual ~Disk() {}
flush_tracks();
}
/*! /*!
@returns the number of discrete positions that this disk uses to model its complete surface area. @returns the number of discrete positions that this disk uses to model its complete surface area.

5
Storage/Disk/Drive.cpp
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@ -21,7 +21,12 @@ Drive::Drive(unsigned int input_clock_rate, int revolutions_per_minute, int numb
available_heads_(number_of_heads) { available_heads_(number_of_heads) {
} }
Drive::~Drive() {
if(disk_) disk_->flush_tracks();
}
void Drive::set_disk(const std::shared_ptr<Disk> &disk) { void Drive::set_disk(const std::shared_ptr<Disk> &disk) {
if(disk_) disk_->flush_tracks();
disk_ = disk; disk_ = disk;
has_disk_ = !!disk_; has_disk_ = !!disk_;

1
Storage/Disk/Drive.hpp
View File

@ -24,6 +24,7 @@ namespace Disk {
class Drive: public Sleeper, public TimedEventLoop { class Drive: public Sleeper, public TimedEventLoop {
public: public:
Drive(unsigned int input_clock_rate, int revolutions_per_minute, int number_of_heads); Drive(unsigned int input_clock_rate, int revolutions_per_minute, int number_of_heads);
~Drive();
/*! /*!
Replaces whatever is in the drive with @c disk. Replaces whatever is in the drive with @c disk.