AMReX.H File Reference

Runtime initialization/finalization helpers and global diagnostics. More...

#include <AMReX_Config.H>
#include <AMReX_GpuQualifiers.H>
#include <AMReX_GpuPrint.H>
#include <AMReX_GpuAssert.H>
#include <AMReX_ccse-mpi.H>
#include <AMReX_Exception.H>
#include <AMReX_Extension.H>
#include <cstdint>
#include <cstring>
#include <functional>
#include <iostream>
#include <memory>
#include <string>
#include <type_traits>
#include <vector>

Go to the source code of this file.

Classes
class	amrex::AMReX
	Runtime context stored for each active amrex::Initialize() call. More...

Namespaces
namespace	amrex
namespace	amrex::system
	Compile- and run-time configuration flags; defaults are set during Initialize() and may be updated later (e.g., via ParmParse or setters).

Typedefs
using	amrex::PTR_TO_VOID_FUNC = void(*)()
using	amrex::ErrorHandler = void(*)(const char *)

Enumerations
enum struct	amrex::FPExcept : std::uint8_t {   amrex::none = 0B0000 , amrex::invalid = 0B0001 , amrex::zero = 0B0010 , amrex::overflow = 0B0100 ,   amrex::all = 0B0111 }

Functions
std::string	amrex::Version ()
	Return the AMReX version string reported by git describe.
AMReX *	amrex::Initialize (MPI_Comm mpi_comm, std::ostream &a_osout=std::cout, std::ostream &a_oserr=std::cerr, ErrorHandler a_errhandler=nullptr, int a_device_id=-1)
	Initialize AMReX using an existing MPI communicator.
AMReX *	amrex::Initialize (int &argc, char **&argv, const std::function< void()> &func_parm_parse, std::ostream &a_osout=std::cout, std::ostream &a_oserr=std::cerr, ErrorHandler a_errhandler=nullptr, int a_device_id=-1)
	Initialize AMReX from argc/argv with custom ParmParse handling.
AMReX *	amrex::Initialize (int &argc, char **&argv, bool build_parm_parse=true, MPI_Comm mpi_comm=MPI_COMM_WORLD, const std::function< void()> &func_parm_parse={}, std::ostream &a_osout=std::cout, std::ostream &a_oserr=std::cerr, ErrorHandler a_errhandler=nullptr, int a_device_id=-1)
	Initialize AMReX from argc/argv, optionally constructing ParmParse.
void	amrex::Init_minimal (MPI_Comm mpi_comm=MPI_COMM_WORLD)
	Minimal initialization for utilities that need only part of AMReX.
bool	amrex::Initialized ()
	Returns true if there are any currently-active and initialized AMReX instances (i.e. one for which amrex::Initialize has been called, and amrex::Finalize has not). Otherwise false.
void	amrex::Finalize (AMReX *pamrex)
	Finalize AMReX state associated with the supplied instance pointer.
void	amrex::Finalize ()
	Convenience overload that finalizes the instance at the top of the stack.
void	amrex::Finalize_minimal ()
	Finalize a run that was initialized via Init_minimal().
void	amrex::ExecOnFinalize (std::function< void()> func)
	Register a callback invoked during Finalize() (LIFO order).
void	amrex::ExecOnInitialize (std::function< void()> func)
	Register a callback invoked early in Initialize().
template<class... Ts>
__host__ __device__ void	amrex::ignore_unused (const Ts &...)
	No-op helper that marks variables as intentionally unused.
void	amrex::Error (const std::string &msg)
	Print a message to stderr and abort the program.
void	amrex::Error_host (const char *type, const char *msg)
	Host-side error sink invoked by GPU-friendly overloads.
__host__ __device__ void	amrex::Error (const char *msg=nullptr)
	Print a message to stderr and abort the program.
void	amrex::Warning (const std::string &msg)
	Print a warning message to the diagnostic stream and keep running.
void	amrex::Warning_host (const char *msg)
	Print a warning message to the diagnostic stream (host only).
__host__ __device__ void	amrex::Warning (const char *msg)
	Print a warning message to the diagnostic stream and keep running.
void	amrex::Abort (const std::string &msg)
	Print a fatal-error message to stderr and abort execution.
__host__ __device__ void	amrex::Abort (const char *msg=nullptr)
	Print a fatal-error message to stderr and abort execution.
void	amrex::Assert_host (const char *EX, const char *file, int line, const char *msg, std::size_t msg_size=0)
	Host-side assertion helper used by BL_ASSERT().
__host__ __device__ void	amrex::Assert (const char *EX, const char *file, int line)
	Device/host assertion helper used by BL_ASSERT.
__host__ __device__ void	amrex::Assert (const char *EX, const char *file, int line, const char *msg)
	Assert helper that includes an additional message in the output.
void	amrex::Assert (const char *EX, const char *file, int line, const std::string &msg)
void	amrex::write_to_stderr_without_buffering (const char *str)
	Write directly to stderr after flushing standard I/O buffers.
void	amrex::SetErrorHandler (ErrorHandler f)
	Install a custom error handler invoked by amrex::Error_host.
std::ostream &	amrex::OutStream ()
	Stream that receives informational output (defaults to std::cout).
std::ostream &	amrex::ErrorStream ()
	Stream that receives diagnostic output (defaults to std::cerr).
int	amrex::Verbose () noexcept
	Return the verbosity level configured via ParmParse or SetVerbose().
void	amrex::SetVerbose (int v) noexcept
	Override the verbosity level used by amrex::Print().
bool	amrex::InitSNaN () noexcept
	Whether new allocations are filled with signaling NaNs when enabled.
void	amrex::SetInitSNaN (bool v) noexcept
	Toggle whether new allocations are initialized with signaling NaNs.
std::string	amrex::get_command ()
	Get the entire command line including the executable path.
int	amrex::command_argument_count ()
	Get the number of command line arguments excluding argv[0].
std::string	amrex::get_command_argument (int number)
	Fetch a copy of argv[number] (argv[0] is the executable path).
void	amrex::GccPlacater ()
bool	amrex::any (FPExcept a)
	Return true when a is not FPExcept::none (i.e., the mask is non-empty).
FPExcept	amrex::operator| (FPExcept a, FPExcept b)
	Bitwise union of two floating-point exception masks.
FPExcept	amrex::operator& (FPExcept a, FPExcept b)
	Bitwise intersection of two floating-point exception masks.
FPExcept	amrex::getFPExcept ()
	Return currently enabled FP exceptions. Linux only.
FPExcept	amrex::setFPExcept (FPExcept excepts)
FPExcept	amrex::disableFPExcept (FPExcept excepts)
	Disable FP exceptions. Linux Only.
FPExcept	amrex::enableFPExcept (FPExcept excepts)
	Enable FP exceptions. Linux Only.

Variables
constexpr bool	amrex::system::NDebug = true
constexpr bool	amrex::system::Debug = false

Detailed Description

Runtime initialization/finalization helpers and global diagnostics.