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File Content: `prlink.h`

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef prlink_h___
#define prlink_h___

/*
** API to static and dynamic linking.
*/
#include "prtypes.h"

PR_BEGIN_EXTERN_C

typedef struct PRLibrary PRLibrary;

typedef struct PRStaticLinkTable {
    const char *name;
    void (*fp)(void);
} PRStaticLinkTable;

/*
** Change the default library path to the given string. The string is
** copied. This call will fail if it runs out of memory.
**
** The string provided as 'path' is copied. The caller can do whatever is
** convenient with the argument when the function is complete.
*/
NSPR_API(PRStatus) PR_SetLibraryPath(const char *path);

/*
** Return a character string which contains the path used to search for
** dynamically loadable libraries.
**
** The returned value is basically a copy of a PR_SetLibraryPath().
** The storage is allocated by the runtime and becomes the responsibilty
** of the caller.
*/
NSPR_API(char*) PR_GetLibraryPath(void);

/*
** Given a directory name "dir" and a library name "lib" construct a full
** path name that will refer to the actual dynamically loaded
** library. This does not test for existance of said file, it just
** constructs the full filename. The name constructed is system dependent
** and prepared for PR_LoadLibrary. The result must be free'd when the
** caller is done with it.
**
** The storage for the result is allocated by the runtime and becomes the
** responsibility of the caller.
*/
NSPR_API(char*) PR_GetLibraryName(const char *dir, const char *lib);

/*
**
** Free the memory allocated, for the caller, by PR_GetLibraryName
*/
NSPR_API(void) PR_FreeLibraryName(char *mem);

/*
** Given a library "name" try to load the library. The argument "name"
** is a machine-dependent name for the library, such as the full pathname
** returned by PR_GetLibraryName.  If the library is already loaded,
** this function will avoid loading the library twice.
**
** If the library is loaded successfully, then a pointer to the PRLibrary
** structure representing the library is returned.  Otherwise, NULL is
** returned.
**
** This increments the reference count of the library.
*/
NSPR_API(PRLibrary*) PR_LoadLibrary(const char *name);

/*
** Each operating system has its preferred way of specifying
** a file in the file system.  Most operating systems use
** a pathname.  Mac OS Classic, on the other hand, uses the FSSpec
** structure to specify a file. PRLibSpec allows NSPR clients
** to use the type of file specification that is most efficient
** for a particular platform.
**
** On some operating systems such as Mac OS Classic, a shared library
** may contain code fragments that can be individually loaded.
** PRLibSpec also allows NSPR clients to identify a code fragment
** in a library, if code fragments are supported by the OS.
** A code fragment can be specified by name or by an integer index.
**
** Right now PRLibSpec supports four types of library specification:
** a pathname in the native character encoding, a Mac code fragment
** by name, a Mac code fragment by index, and a UTF-16 pathname.
*/

typedef enum PRLibSpecType {
    PR_LibSpec_Pathname,
    PR_LibSpec_MacNamedFragment,   /* obsolete (for Mac OS Classic) */
    PR_LibSpec_MacIndexedFragment, /* obsolete (for Mac OS Classic) */
    PR_LibSpec_PathnameU           /* supported only on Win32 */
} PRLibSpecType;

struct FSSpec; /* Mac OS Classic FSSpec */

typedef struct PRLibSpec {
    PRLibSpecType type;
    union {
        /* if type is PR_LibSpec_Pathname */
        const char *pathname;

        /* if type is PR_LibSpec_MacNamedFragment */
        struct {
            const struct FSSpec *fsspec;
            const char *name;
        } mac_named_fragment;      /* obsolete (for Mac OS Classic) */

        /* if type is PR_LibSpec_MacIndexedFragment */
        struct {
            const struct FSSpec *fsspec;
            PRUint32 index;
        } mac_indexed_fragment;    /* obsolete (for Mac OS Classic) */

        /* if type is PR_LibSpec_PathnameU */
        const PRUnichar *pathname_u; /* supported only on Win32 */
    } value;
} PRLibSpec;

/*
** The following bit flags may be or'd together and passed
** as the 'flags' argument to PR_LoadLibraryWithFlags.
** Flags not supported by the underlying OS are ignored.
*/

#define PR_LD_LAZY   0x1  /* equivalent to RTLD_LAZY on Unix */
#define PR_LD_NOW    0x2  /* equivalent to RTLD_NOW on Unix */
#define PR_LD_GLOBAL 0x4  /* equivalent to RTLD_GLOBAL on Unix */
#define PR_LD_LOCAL  0x8  /* equivalent to RTLD_LOCAL on Unix */
/* The following is equivalent to LOAD_WITH_ALTERED_SEARCH_PATH on Windows */
#define PR_LD_ALT_SEARCH_PATH  0x10
/*                0x8000     reserved for NSPR internal use */

/*
** Load the specified library, in the manner specified by 'flags'.
*/

NSPR_API(PRLibrary *)
PR_LoadLibraryWithFlags(
    PRLibSpec libSpec,    /* the shared library */
    PRIntn flags          /* flags that affect the loading */
);

/*
** Unload a previously loaded library. If the library was a static
** library then the static link table will no longer be referenced. The
** associated PRLibrary object is freed.
**
** PR_FAILURE is returned if the library cannot be unloaded.
**
** This function decrements the reference count of the library.
*/
NSPR_API(PRStatus) PR_UnloadLibrary(PRLibrary *lib);

/*
** Given the name of a procedure, return the address of the function that
** implements the procedure, or NULL if no such function can be
** found. This does not find symbols in the main program (the ".exe");
** use PR_LoadStaticLibrary to register symbols in the main program.
**
** This function does not modify the reference count of the library.
*/
NSPR_API(void*) PR_FindSymbol(PRLibrary *lib, const char *name);

/*
** Similar to PR_FindSymbol, except that the return value is a pointer to
** a function, and not a pointer to void. Casting between a data pointer
** and a function pointer is not portable according to the C standard.
** Any function pointer can be cast to any other function pointer.
**
** This function does not modify the reference count of the library.
*/
typedef void (*PRFuncPtr)(void);
NSPR_API(PRFuncPtr) PR_FindFunctionSymbol(PRLibrary *lib, const char *name);

/*
** Finds a symbol in one of the currently loaded libraries. Given the
** name of a procedure, return the address of the function that
** implements the procedure, and return the library that contains that
** symbol, or NULL if no such function can be found. This does not find
** symbols in the main program (the ".exe"); use PR_AddStaticLibrary to
** register symbols in the main program.
**
** This increments the reference count of the library.
*/
NSPR_API(void*) PR_FindSymbolAndLibrary(const char *name,
                                        PRLibrary* *lib);

/*
** Similar to PR_FindSymbolAndLibrary, except that the return value is
** a pointer to a function, and not a pointer to void. Casting between a
** data pointer and a function pointer is not portable according to the C
** standard. Any function pointer can be cast to any other function pointer.
**
** This increments the reference count of the library.
*/
NSPR_API(PRFuncPtr) PR_FindFunctionSymbolAndLibrary(const char *name,
        PRLibrary* *lib);

/*
** Register a static link table with the runtime under the name
** "name". The symbols present in the static link table will be made
** available to PR_FindSymbol. If "name" is null then the symbols will be
** made available to the library which represents the executable. The
** tables are not copied.
**
** Returns the library object if successful, null otherwise.
**
** This increments the reference count of the library.
*/
NSPR_API(PRLibrary*) PR_LoadStaticLibrary(
    const char *name, const PRStaticLinkTable *table);

/*
** Return the pathname of the file that the library "name" was loaded
** from. "addr" is the address of a function defined in the library.
**
** The caller is responsible for freeing the result with PR_Free.
*/
NSPR_API(char *) PR_GetLibraryFilePathname(const char *name, PRFuncPtr addr);

PR_END_EXTERN_C

#endif /* prlink_h___ */

Name	Size	Permission
md	---	0755
obsolete	---	0755
private	---	0755
nspr.h	1016 bytes	0644
plarena.h	11644 bytes	0644
plarenas.h	565 bytes	0644
plbase64.h	2891 bytes	0644
plerror.h	880 bytes	0644
plgetopt.h	4710 bytes	0644
plhash.h	4834 bytes	0644
plstr.h	13426 bytes	0644
pratom.h	5909 bytes	0644
prbit.h	5274 bytes	0644
prclist.h	2480 bytes	0644
prcmon.h	2145 bytes	0644
prcountr.h	14757 bytes	0644
prcpucfg.h	35601 bytes	0644
prcvar.h	3593 bytes	0644
prdtoa.h	1593 bytes	0644
prenv.h	6209 bytes	0644
prerr.h	8308 bytes	0644
prerror.h	11505 bytes	0644
prinet.h	3096 bytes	0644
prinit.h	6598 bytes	0644
prinrval.h	5339 bytes	0644
prio.h	77447 bytes	0644
pripcsem.h	2640 bytes	0644
prlink.h	8354 bytes	0644
prlock.h	3816 bytes	0644
prlog.h	7050 bytes	0644
prlong.h	12757 bytes	0644
prmem.h	4760 bytes	0644
prmon.h	3240 bytes	0644
prmwait.h	16264 bytes	0644
prnetdb.h	19671 bytes	0644
prolock.h	4643 bytes	0644
prpdce.h	2477 bytes	0644
prprf.h	4502 bytes	0644
prproces.h	2306 bytes	0644
prrng.h	2458 bytes	0644
prrwlock.h	2854 bytes	0644
prshm.h	8468 bytes	0644
prshma.h	7138 bytes	0644
prsystem.h	2698 bytes	0644
prthread.h	10085 bytes	0644
prtime.h	10235 bytes	0644
prtpool.h	2376 bytes	0644
prtrace.h	20675 bytes	0644
prtypes.h	19891 bytes	0644
prvrsion.h	3547 bytes	0644
prwin16.h	5998 bytes	0644

File Content: prlink.h

File Content: `prlink.h`