unistd.h

Collaboration diagram for unistd.h:

Functions
void *	_sbrk (int incr)
	Implementation of the sbrk systemcall for standalone software. More...
void *	malloc (size_t size)
void	free (void *ptr)
void *	calloc (size_t nmemb, size_t size)
void *	realloc (void *ptr, size_t size)
ssize_t	write (int fd, const void *buf, size_t count)
ssize_t	read (int fd, void *buf, size_t count)

Detailed Description

Links to unistd documentation

Function Documentation

void* _sbrk

(

int

incr

)

Implementation of the sbrk systemcall for standalone software.

This system call is used when there is no more space for malloc.

See also

http://linux.die.net/man/2/sbrk

Definition at line 34 of file sbrk.c.

References bsp_fatal(), and ERROR_OUT_OF_MEMORY.

Referenced by malloc().

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void* malloc

(

size_t

size

)

See also

http://linux.die.net/man/3/malloc

malloc is implemented in the newlib for standalone applications and uses pvPortMalloc when FreeRTOS is used.

Definition at line 17 of file helper_unistd_h.dox.

References _sbrk().

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void free

(

void *

ptr

)

See also

http://linux.die.net/man/3/malloc

void* calloc	(	size_t	nmemb,
		size_t	size
	)

See also

http://linux.die.net/man/3/malloc

void* realloc	(	void *	ptr,
		size_t	size
	)

See also

http://linux.die.net/man/3/malloc

ssize_t write	(	int	fd,
		const void *	buf,
		size_t	count
	)

See also

http://linux.die.net/man/2/write

Definition at line 40 of file helper_unistd_h.dox.

ssize_t read	(	int	fd,
		void *	buf,
		size_t	count
	)

See also

http://linux.die.net/man/2/read

Definition at line 48 of file helper_unistd_h.dox.