directWrite Class Reference

Inheritance diagram for directWrite:

Collaboration diagram for directWrite:

Public Member Functions
	directWrite ()
void	execute (const std::vector< std::string > &remainingOptions) override
Public Member Functions inherited from baseTest
	baseTest (const std::string &aName, const std::string &aDescription, const decltype(parameters)&aParameters, const decltype(options)&aOptions={})
void	ensuredWrite (int fd, const std::string &data)
void	ensuredRead (int fd, std::string &data)
void	Execute (const std::vector< std::string > &remainingOptions)

Additional Inherited Members
Static Public Member Functions inherited from baseTest
static std::map< std::string, baseTest * > &	getList ()
static void	setUpOptions ()
static const std::string &	getDescriptions ()
Protected Attributes inherited from baseTest
std::string	name
std::string	description
std::list< std::pair< std::string, std::string > >	parameters
std::list< std::pair< options::base &, std::string > >	options
std::set< std::string >	createdFiles
Static Protected Attributes inherited from baseTest
static options::single< unsigned int >	repeat
static options::single< bool >	cleanup
static options::single< bool >	urandom
static options::single< bool >	einsZweiDrei
static options::single< std::string >	contentFile
static options::single< size_t >	size
static options::single< unsigned int >	blocks
static options::single< std::string >	content
static options::single< bool >	truncate
static options::single< std::chrono::duration< double > >	time
static options::single< unsigned long >	syncus
static options::single< unsigned long >	skewus
static std::string	descriptions = "\npossible actions and their parameters:\n"

Detailed Description

Definition at line 431 of file fileOpsTests.cpp.

Constructor & Destructor Documentation

directWrite()

directWrite::directWrite ( )

inline

Definition at line 433 of file fileOpsTests.cpp.

                 : baseTest("directWrite",
                                "create a file with O_DIRECT and write into it", {
        {"file", "path to file"
        }
    },
    {{time, "wait this long between writes"}}) {};

Member Function Documentation

execute()

void directWrite::execute ( const std::vector< std::string > &  remainingOptions )

inlineoverridevirtual

Implements baseTest.

Definition at line 439 of file fileOpsTests.cpp.

                                                                        {
        auto file = remainingOptions.at(0);
        // we need a page aligned buffer
        auto buffer = throwcall::badval(mmap(nullptr, content.size(),
                                             PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS,
                                             -1, 0),
                                        MAP_FAILED,
                                        "mmap ", content.size(), " bytes anonymously");
        memcpy(buffer, content.data(), content.size());
        auto fd = throwcall::badval(open(file.c_str(), O_CREAT | O_WRONLY | O_DIRECT, 0744), -1, "open ", file);
        for (unsigned i = 0; i < blocks; i++) {
            if (i > 0) {
                std::this_thread::sleep_for(time);
            }
            throwcall::good0(write(fd, buffer, content.size()) - content.size(), "write");
        }
        throwcall::good0(close(fd), "close ", file);
        throwcall::good0(munmap(buffer, content.size()), "munmap buffer");
        createdFiles.emplace(file);
    };

References throwcall::badval(), baseTest::blocks, baseTest::content, baseTest::createdFiles, throwcall::good0(), and baseTest::time.

Here is the call graph for this function:

---

The documentation for this class was generated from the following file:

• src/fileOpsTests.cpp (v0.19-24-g0617ca1 with changes)