Ways to Improve Performance

Profile-Based Optimization

The Startup File icrt0.o

The icrt0.o startup file uses the atexit system call to register the function that writes out profile data. (For 64-bit mode, the initialization code is in /usr/ccs/lib/pa20_64/fdp_init.0.) That function is called when the application exits.

atexit allows a fixed number of functions to be registered from a user application. Instrumented applications (those linked with -I) will have one less atexit call available. One or more instrumented shared libraries will use a single additional atexit call. Therefore, an instrumented application that contains any number instrumented shared libraries will use two of the available atexit calls.

For details on atexit, see atexit(2).

The -ILinker Option

When invoked with the -Ioption, the linker instruments all the specified object files. Note that the linker instruments regular object files as well as I-SOM files; however, with regular object files, only procedure call instrumentation is added. With I-SOM files, additional instrumentation is done within procedures.

For instance, suppose you have a regular object file named foo.o created by compiling without the +I option, and you compile a source file bar.c with the +I option and specify foo.o on the compile line:

$ cc -c foo.c

$ cc -v -o foobar -O +I bar.c foo.o /opt/langtools/lbin/cpp bar.c /var/tmp/ctm456 /opt/ansic/lbin/ccom /var/tmp/ctm456 bar.o -O2-I /usr/ccs/bin/ld /opt/langtools/lib/icrt0.o-u main -o foobar \

bar.o foo.o -I -lc

In this case, the linker instruments both bar.o and foo.o. However, since foo.o is not an I-SOM file, only its procedure calls are instrumented; basic blocks within procedures are not instrumented. To instrument foo.c to the same extent, you must compile it with the +I option — for example:

$ cc -v-c +I -O foo.c /opt/langtools/lbin/cpp foo.c /var/tmp/ctm432 /opt/ansic/lbin/ccom /var/tmp/ctm432 foo.o -O2 -I $ cc -v-o foobar -O +I bar.c foo.o /opt/langtools/lbin/cpp bar.c /var/tmp/ctm456 /opt/ansic/lbin/ccom /var/tmp/ctm456 bar.o -O2 -I /usr/ccs/bin/ld /opt/langtools/lib/icrt0.o -u main -o foobar \

bar.o foo.o -I -lc

278

Chapter 8

Page 277 Page 279
Page 278
Image 278
Kenwood HP 9000 manual Startup File icrt0.o, ILinker Option, 278
Page 277 Page 279

HP 9000 specifications

The Kenwood HP 9000 is a cutting-edge home appliance designed for culinary enthusiasts seeking to elevate their cooking experience. This powerful kitchen machine stands out for its multi-functionality, combining the roles of a food processor, blender, and mixer into one sleek unit.

One of the flagship features of the Kenwood HP 9000 is its robust motor, which delivers exceptional performance across various tasks. With a powerful motor that operates at multiple speeds, users can tackle everything from kneading dough to finely chopping vegetables with ease. The variable speed control allows for precision, ensuring that every ingredient is processed to perfection according to individual preferences.

The HP 9000 comes equipped with a variety of attachments that enhance its versatility. Among these are a stainless-steel mixing bowl, a dough hook, a whisk, and multiple cutting blades. This extensive array of accessories means that users can whip up delightful pastries, create homemade pasta, or prepare smoothies with minimal hassle. Each attachment is designed for easy attachment and removal, making the transition between tasks seamless and efficient.

Another key characteristic of the Kenwood HP 9000 is its advanced safety features. The design incorporates mechanisms that prevent the machine from operating unless all components are securely in place. This not only gives users peace of mind while cooking but also ensures longevity for the appliance, reducing the risk of wear and tear over time.

In terms of design, the HP 9000 is both modern and aesthetically pleasing. Its ergonomic shape and compact size make it easy to store and use in various kitchen settings, while the high-quality materials used in its construction guarantee durability and longevity. The user interface is intuitive, with clearly labeled buttons that facilitate operation, ensuring that even novice cooks can navigate the machine effortlessly.

Additionally, the Kenwood HP 9000 features innovative technologies, such as an integrated digital timer and a pulse function for added control during food preparation. These features enhance cooking precision, allowing users to achieve consistent results every time.

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.
Top Page Image Contents