Parameter Deﬁnition, 246 | Kenwood HP 9000 instruction

Shared Library Management Routines

The dlopen Shared Library Management Routines

Parameters

Parameter	Deﬁnition

handle	Either the value returned by a call to dlopen or
	the special ﬂag RTLD_NEXT. In the former case,
	the corresponding shared library must not have
	been closed using dlclose.

name	The symbol's name as a character string.

Return Values

If handle does not refer to a valid shared library opened by dlopen, or if the named symbol cannot be found within any of the shared libraries associated with handle, dlsym returns NULL. The dlerror routine provides more detailed diagnostic information.

Description

dlsym allows a process to obtain the address of a symbol deﬁned within a shared library previously opened by dlopen.

The dlsym routine searches for the named symbol in all shared libraries loaded automatically as a result of loading the shared library referenced by handle [see dlopen(3C)].

If handle is RTLD_NEXT, the search begins with the “next” shared library after the shared library from which dlsym was invoked. Shared libraries are searched using a load order symbol resolution algorithm [see dlopen(3C)]. The “next” shared library, and all other shared libraries searched, are either of global scope (because they were loaded at startup or as part of a dlopen operation with the RTLD_GLOBAL ﬂag) or are shared libraries loaded by the same dlopen operation that loaded the caller of dlsym.

Usage

RTLD_NEXT can be used to navigate an intentionally created hierarchy of multiply deﬁned symbols created through interposition. For example, if a program wished to create an implementation of malloc that embedded some statistics gathering about memory allocations, such an implementation could deﬁne its own malloc which would gather the

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Chapter 6

HP 9000 specifications

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In summary, the Kenwood HP 9000 is an exceptional kitchen appliance that combines power, versatility, and safety. With its advanced features and user-friendly design, it is an ideal choice for anyone looking to simplify their cooking process while achieving professional-level results. Whether you're whipping up a quick meal or tackling an elaborate recipe, the HP 9000 is a reliable companion that will inspire culinary creativity.

Kenwood HP 9000 manual Parameter Deﬁnition, 246

Models: HP 9000